55234431 has 24 divisors (see below), whose sum is σ = 95147520. Its totient is φ = 30189456.

The previous prime is 55234429. The next prime is 55234453. The reversal of 55234431 is 13443255.

It is not a de Polignac number, because 55234431 - 2¹ = 55234429 is a prime.

It is a super-2 number, since 2×55234431² = 6101684735787522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55234395 and 55234404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55232431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17611 + ... + 20508.

It is an arithmetic number, because the mean of its divisors is an integer number (3964480).

Almost surely, 2^55234431 is an apocalyptic number.

55234431 is a deficient number, since it is larger than the sum of its proper divisors (39913089).

55234431 is a wasteful number, since it uses less digits than its factorization.

55234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38155 (or 38152 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 55234431 is about 7431.9870155968. The cubic root of 55234431 is about 380.8348013846.

Adding to 55234431 its reverse (13443255), we get a palindrome (68677686).

The spelling of 55234431 in words is "fifty-five million, two hundred thirty-four thousand, four hundred thirty-one".