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55224101231 = 1317249882811
BaseRepresentation
bin110011011011100111…
…001110100101101111
312021112122220000021122
4303123213032211233
51401044332214411
641211500051155
73663335054405
oct633347164557
9167478800248
1055224101231
1121469624692
12a852533abb
1352911739a0
14295c489475
1516833169db
hexcdb9ce96f

55224101231 has 8 divisors (see below), whose sum is σ = 62970468624. Its totient is φ = 47977499520.

The previous prime is 55224101183. The next prime is 55224101281. The reversal of 55224101231 is 13210142255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55224101231 - 218 = 55223839087 is a prime.

It is a super-2 number, since 2×552241012312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55224101231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55224101281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124941185 + ... + 124941626.

It is an arithmetic number, because the mean of its divisors is an integer number (7871308578).

Almost surely, 255224101231 is an apocalyptic number.

55224101231 is a deficient number, since it is larger than the sum of its proper divisors (7746367393).

55224101231 is a wasteful number, since it uses less digits than its factorization.

55224101231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249882841.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 55224101231 its reverse (13210142255), we get a palindrome (68434243486).

The spelling of 55224101231 in words is "fifty-five billion, two hundred twenty-four million, one hundred one thousand, two hundred thirty-one".

Divisors: 1 13 17 221 249882811 3248476543 4248007787 55224101231