53911431 has 12 divisors (see below), whose sum is σ = 88996752. Its totient is φ = 30806496.

The previous prime is 53911423. The next prime is 53911447. The reversal of 53911431 is 13411935.

It is not a de Polignac number, because 53911431 - 2³ = 53911423 is a prime.

It is a super-2 number, since 2×53911431² = 5812884784935522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53911395 and 53911404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53911411) 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, 427806 + ... + 427931.

It is an arithmetic number, because the mean of its divisors is an integer number (7416396).

Almost surely, 2^53911431 is an apocalyptic number.

53911431 is a deficient number, since it is larger than the sum of its proper divisors (35085321).

53911431 is a wasteful number, since it uses less digits than its factorization.

53911431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855750 (or 855747 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 53911431 is about 7342.4403981238. The cubic root of 53911431 is about 377.7695538355.

The spelling of 53911431 in words is "fifty-three million, nine hundred eleven thousand, four hundred thirty-one".