55510431 has 16 divisors (see below), whose sum is σ = 78879744. Its totient is φ = 34642784.

The previous prime is 55510417. The next prime is 55510439. The reversal of 55510431 is 13401555.

It is not a de Polignac number, because 55510431 - 2⁹ = 55509919 is a prime.

It is a super-2 number, since 2×55510431² = 6162815899611522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55510439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5316 + ... + 11801.

It is an arithmetic number, because the mean of its divisors is an integer number (4929984).

Almost surely, 2^55510431 is an apocalyptic number.

55510431 is a deficient number, since it is larger than the sum of its proper divisors (23369313).

55510431 is a wasteful number, since it uses less digits than its factorization.

55510431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17190.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 55510431 is about 7450.5322628655. The cubic root of 55510431 is about 381.4680767582.

Adding to 55510431 its reverse (13401555), we get a palindrome (68911986).

The spelling of 55510431 in words is "fifty-five million, five hundred ten thousand, four hundred thirty-one".