55032431 has 12 divisors (see below), whose sum is σ = 57574440. Its totient is φ = 52587360.

The previous prime is 55032413. The next prime is 55032433. The reversal of 55032431 is 13423055.

It is not a de Polignac number, because 55032431 - 2¹⁴ = 55016047 is a prime.

It is a super-2 number, since 2×55032431² = 6057136923539522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55032397 and 55032406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55032433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83180 + ... + 83838.

It is an arithmetic number, because the mean of its divisors is an integer number (4797870).

Almost surely, 2^55032431 is an apocalyptic number.

55032431 is a deficient number, since it is larger than the sum of its proper divisors (2542009).

55032431 is an equidigital number, since it uses as much as digits as its factorization.

55032431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 55032431 is about 7418.3846624451. The cubic root of 55032431 is about 380.3699789960.

Adding to 55032431 its reverse (13423055), we get a palindrome (68455486).

The spelling of 55032431 in words is "fifty-five million, thirty-two thousand, four hundred thirty-one".