551322155 has 8 divisors (see below), whose sum is σ = 700503552. Its totient is φ = 415113088.

The previous prime is 551322143. The next prime is 551322157. The reversal of 551322155 is 551223155.

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 551322155 - 2⁴ = 551322139 is a prime.

It is a super-2 number, since 2×551322155² = 607912237187688050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551322157) 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, 3242987 + ... + 3243156.

It is an arithmetic number, because the mean of its divisors is an integer number (87562944).

Almost surely, 2^551322155 is an apocalyptic number.

551322155 is a deficient number, since it is larger than the sum of its proper divisors (149181397).

551322155 is a wasteful number, since it uses less digits than its factorization.

551322155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6486165.

The product of its digits is 7500, while the sum is 29.

The square root of 551322155 is about 23480.2503180865. The cubic root of 551322155 is about 819.9772723227.

The spelling of 551322155 in words is "five hundred fifty-one million, three hundred twenty-two thousand, one hundred fifty-five".