55431453 has 16 divisors (see below), whose sum is σ = 92146176. Its totient is φ = 28795440.

The previous prime is 55431451. The next prime is 55431461. The reversal of 55431453 is 35413455.

It is not a de Polignac number, because 55431453 - 2¹ = 55431451 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55431453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55431451) 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, 119751 + ... + 120212.

It is an arithmetic number, because the mean of its divisors is an integer number (5759136).

Almost surely, 2^55431453 is an apocalyptic number.

It is an amenable number.

55431453 is a deficient number, since it is larger than the sum of its proper divisors (36714723).

55431453 is a wasteful number, since it uses less digits than its factorization.

55431453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239984.

The product of its digits is 18000, while the sum is 30.

The square root of 55431453 is about 7445.2302180658. The cubic root of 55431453 is about 381.2870784327.

It can be divided in two parts, 5543 and 1453, that added together give a palindrome (6996).

The spelling of 55431453 in words is "fifty-five million, four hundred thirty-one thousand, four hundred fifty-three".