551551023 has 12 divisors (see below), whose sum is σ = 798769920. Its totient is φ = 366738336.

The previous prime is 551550973. The next prime is 551551031. The reversal of 551551023 is 320155155.

551551023 is a `hidden beast` number, since 551 + 5 + 5 + 102 + 3 = 666.

It is not a de Polignac number, because 551551023 - 2²⁹ = 14680111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551551823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76558 + ... + 83451.

It is an arithmetic number, because the mean of its divisors is an integer number (66564160).

Almost surely, 2^551551023 is an apocalyptic number.

551551023 is a deficient number, since it is larger than the sum of its proper divisors (247218897).

551551023 is a wasteful number, since it uses less digits than its factorization.

551551023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160398 (or 160395 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 551551023 is about 23485.1234401695. The cubic root of 551551023 is about 820.0907211742.

The spelling of 551551023 in words is "five hundred fifty-one million, five hundred fifty-one thousand, twenty-three".