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55213141655 = 571577518333
BaseRepresentation
bin110011011010111101…
…011010111010010111
312021111220021012120102
4303122331122322113
51401034031013110
641210425124315
73663142650320
oct633275327227
9167456235512
1055213141655
1121463419591
12a84a92969b
13528bb07429
14295ac35447
15168239e5a5
hexcdaf5ae97

55213141655 has 8 divisors (see below), whose sum is σ = 75720880032. Its totient is φ = 37860439968.

The previous prime is 55213141651. The next prime is 55213141661. The reversal of 55213141655 is 55614131255.

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 55213141655 - 22 = 55213141651 is a prime.

It is a super-2 number, since 2×552131416552 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55213141651) 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, 788759132 + ... + 788759201.

It is an arithmetic number, because the mean of its divisors is an integer number (9465110004).

Almost surely, 255213141655 is an apocalyptic number.

55213141655 is a deficient number, since it is larger than the sum of its proper divisors (20507738377).

55213141655 is a wasteful number, since it uses less digits than its factorization.

55213141655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577518345.

The product of its digits is 90000, while the sum is 38.

The spelling of 55213141655 in words is "fifty-five billion, two hundred thirteen million, one hundred forty-one thousand, six hundred fifty-five".

Divisors: 1 5 7 35 1577518333 7887591665 11042628331 55213141655