551223322155 has 96 divisors (see below), whose sum is σ = 1055173728960. Its totient is φ = 263975040000.

The previous prime is 551223322141. The next prime is 551223322183.

551223322155 is a `hidden beast` number, since 55 + 122 + 332 + 2 + 155 = 666.

551223322155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 551223322155 - 2²¹ = 551221225003 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21034801 + ... + 21060989.

It is an arithmetic number, because the mean of its divisors is an integer number (10991393010).

Almost surely, 2^551223322155 is an apocalyptic number.

551223322155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551223322155 is a deficient number, since it is larger than the sum of its proper divisors (503950406805).

551223322155 is a wasteful number, since it uses less digits than its factorization.

551223322155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26733 (or 26730 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

It can be divided in two parts, 551223 and 322155, that added together give a palindrome (873378).

The spelling of 551223322155 in words is "five hundred fifty-one billion, two hundred twenty-three million, three hundred twenty-two thousand, one hundred fifty-five".