53313691 has 2 divisors, whose sum is σ = 53313692. Its totient is φ = 53313690.

The previous prime is 53313671. The next prime is 53313697. The reversal of 53313691 is 19631335.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53313691 - 2¹⁵ = 53280923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53313697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26656845 + 26656846.

It is an arithmetic number, because the mean of its divisors is an integer number (26656846).

Almost surely, 2^53313691 is an apocalyptic number.

53313691 is a deficient number, since it is larger than the sum of its proper divisors (1).

53313691 is an equidigital number, since it uses as much as digits as its factorization.

53313691 is an evil number, because the sum of its binary digits is even.

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

The square root of 53313691 is about 7301.6224909262. The cubic root of 53313691 is about 376.3681955199.

The spelling of 53313691 in words is "fifty-three million, three hundred thirteen thousand, six hundred ninety-one".