551626155 has 24 divisors (see below), whose sum is σ = 981996912. Its totient is φ = 286248384.

The previous prime is 551626129. The next prime is 551626189.

551626155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 551626155 - 2⁷ = 551626027 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 163989 + ... + 167318.

It is an arithmetic number, because the mean of its divisors is an integer number (40916538).

Almost surely, 2^551626155 is an apocalyptic number.

551626155 is a deficient number, since it is larger than the sum of its proper divisors (430370757).

551626155 is a wasteful number, since it uses less digits than its factorization.

551626155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331355 (or 331352 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 551626155 is about 23486.7229514890. The cubic root of 551626155 is about 820.1279569306.

The spelling of 551626155 in words is "five hundred fifty-one million, six hundred twenty-six thousand, one hundred fifty-five".