55134431 has 12 divisors (see below), whose sum is σ = 61480680. Its totient is φ = 49034160.

The previous prime is 55134413. The next prime is 55134439. The reversal of 55134431 is 13443155.

55134431 = 1060² + 1061² + ... + 1106².

It is not a de Polignac number, because 55134431 - 2¹⁴ = 55118047 is a prime.

It is a super-2 number, since 2×55134431² = 6079610963387522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55134431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55134439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23165 + ... + 25433.

It is an arithmetic number, because the mean of its divisors is an integer number (5123390).

Almost surely, 2^55134431 is an apocalyptic number.

55134431 is a deficient number, since it is larger than the sum of its proper divisors (6346249).

55134431 is a wasteful number, since it uses less digits than its factorization.

55134431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374 (or 2327 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 55134431 is about 7425.2562918730. The cubic root of 55134431 is about 380.6048331955.

Adding to 55134431 its reverse (13443155), we get a palindrome (68577586).

The spelling of 55134431 in words is "fifty-five million, one hundred thirty-four thousand, four hundred thirty-one".