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550121251 = 5916357203
BaseRepresentation
bin100000110010100…
…010111100100011
31102100011001111011
4200302202330203
52111312340001
6130331001351
716426645021
oct4062427443
91370131434
10550121251
11262590269
12134299257
1389c83744
14530c1711
1533468d51
hex20ca2f23

550121251 has 8 divisors (see below), whose sum is σ = 562887360. Its totient is φ = 537469992.

The previous prime is 550121233. The next prime is 550121279. The reversal of 550121251 is 152121055.

It is a happy number.

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 550121251 - 25 = 550121219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550121651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18985 + ... + 38218.

It is an arithmetic number, because the mean of its divisors is an integer number (70360920).

Almost surely, 2550121251 is an apocalyptic number.

550121251 is a deficient number, since it is larger than the sum of its proper divisors (12766109).

550121251 is a wasteful number, since it uses less digits than its factorization.

550121251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57425.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 550121251 is about 23454.6637366644. The cubic root of 550121251 is about 819.3814743727.

It can be divided in two parts, 550 and 121251, that added together give a square (121801 = 3492).

The spelling of 550121251 in words is "five hundred fifty million, one hundred twenty-one thousand, two hundred fifty-one".

Divisors: 1 59 163 9617 57203 3374977 9324089 550121251