551723855 has 8 divisors (see below), whose sum is σ = 665207664. Its totient is φ = 439286400.

The previous prime is 551723807. The next prime is 551723857. The reversal of 551723855 is 558327155.

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

It is not a de Polignac number, because 551723855 - 2¹² = 551719759 is a prime.

It is a super-2 number, since 2×551723855² = 608798424352122050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551723857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260426 + ... + 262535.

It is an arithmetic number, because the mean of its divisors is an integer number (83150958).

Almost surely, 2^551723855 is an apocalyptic number.

551723855 is a deficient number, since it is larger than the sum of its proper divisors (113483809).

551723855 is a wasteful number, since it uses less digits than its factorization.

551723855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523177.

The product of its digits is 210000, while the sum is 41.

The square root of 551723855 is about 23488.8027579100. The cubic root of 551723855 is about 820.1763724324.

The spelling of 551723855 in words is "five hundred fifty-one million, seven hundred twenty-three thousand, eight hundred fifty-five".