53400631 has 4 divisors (see below), whose sum is σ = 55123264. Its totient is φ = 51678000.

The previous prime is 53400563. The next prime is 53400637. The reversal of 53400631 is 13600435.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53400631 - 2²¹ = 51303479 is a prime.

It is a super-2 number, since 2×53400631² = 5703254782396322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53400637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861270 + ... + 861331.

It is an arithmetic number, because the mean of its divisors is an integer number (13780816).

Almost surely, 2^53400631 is an apocalyptic number.

53400631 is a deficient number, since it is larger than the sum of its proper divisors (1722633).

53400631 is a wasteful number, since it uses less digits than its factorization.

53400631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722632.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 53400631 is about 7307.5735370915. The cubic root of 53400631 is about 376.5726688289.

The spelling of 53400631 in words is "fifty-three million, four hundred thousand, six hundred thirty-one".