55523331 has 6 divisors (see below), whose sum is σ = 80200380. Its totient is φ = 37015548.

The previous prime is 55523327. The next prime is 55523353. The reversal of 55523331 is 13332555.

It is not a de Polignac number, because 55523331 - 2² = 55523327 is a prime.

It is a super-2 number, since 2×55523331² = 6165680570671122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55523295 and 55523304.

It is not an unprimeable number, because it can be changed into a prime (55523381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3084621 + ... + 3084638.

It is an arithmetic number, because the mean of its divisors is an integer number (13366730).

Almost surely, 2^55523331 is an apocalyptic number.

55523331 is a deficient number, since it is larger than the sum of its proper divisors (24677049).

55523331 is a wasteful number, since it uses less digits than its factorization.

55523331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6169265 (or 6169262 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 55523331 is about 7451.3979225378. The cubic root of 55523331 is about 381.4976241001.

Adding to 55523331 its reverse (13332555), we get a palindrome (68855886).

The spelling of 55523331 in words is "fifty-five million, five hundred twenty-three thousand, three hundred thirty-one".