53185431 has 16 divisors (see below), whose sum is σ = 76926080. Its totient is φ = 32490720.

The previous prime is 53185423. The next prime is 53185459. The reversal of 53185431 is 13458135.

It is not a de Polignac number, because 53185431 - 2³ = 53185423 is a prime.

It is a super-2 number, since 2×53185431² = 5657380141311522, 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 (53185631) 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, 516 + ... + 10326.

It is an arithmetic number, because the mean of its divisors is an integer number (4807880).

Almost surely, 2^53185431 is an apocalyptic number.

53185431 is a deficient number, since it is larger than the sum of its proper divisors (23740649).

53185431 is a wasteful number, since it uses less digits than its factorization.

53185431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9966.

The product of its digits is 7200, while the sum is 30.

The square root of 53185431 is about 7292.8342227148. The cubic root of 53185431 is about 376.0661358502.

The spelling of 53185431 in words is "fifty-three million, one hundred eighty-five thousand, four hundred thirty-one".