551310155 has 32 divisors (see below), whose sum is σ = 751161600. Its totient is φ = 384764800.

The previous prime is 551310139. The next prime is 551310157. The reversal of 551310155 is 551013155.

It is not a de Polignac number, because 551310155 - 2⁴ = 551310139 is a prime.

It is a super-2 number, since 2×551310155² = 607885774012248050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551310157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284540 + ... + 286470.

It is an arithmetic number, because the mean of its divisors is an integer number (23473800).

Almost surely, 2^551310155 is an apocalyptic number.

551310155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551310155 is a deficient number, since it is larger than the sum of its proper divisors (199851445).

551310155 is a wasteful number, since it uses less digits than its factorization.

551310155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155.

The product of its (nonzero) digits is 1875, while the sum is 26.

The square root of 551310155 is about 23479.9947827933. The cubic root of 551310155 is about 819.9713231098.

The spelling of 551310155 in words is "five hundred fifty-one million, three hundred ten thousand, one hundred fifty-five".