53131693 has 2 divisors, whose sum is σ = 53131694. Its totient is φ = 53131692.

The previous prime is 53131669. The next prime is 53131709. The reversal of 53131693 is 39613135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52969284 + 162409 = 7278^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 53131693 - 2¹³ = 53123501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53131193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26565846 + 26565847.

It is an arithmetic number, because the mean of its divisors is an integer number (26565847).

Almost surely, 2^53131693 is an apocalyptic number.

It is an amenable number.

53131693 is a deficient number, since it is larger than the sum of its proper divisors (1).

53131693 is an equidigital number, since it uses as much as digits as its factorization.

53131693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 31.

The square root of 53131693 is about 7289.1489901085. The cubic root of 53131693 is about 375.9394354125.

It can be divided in two parts, 53131 and 693, that added together give a square (53824 = 232²).

The spelling of 53131693 in words is "fifty-three million, one hundred thirty-one thousand, six hundred ninety-three".