53320291 has 2 divisors, whose sum is σ = 53320292. Its totient is φ = 53320290.

The previous prime is 53320273. The next prime is 53320331. The reversal of 53320291 is 19202335.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53320291 - 2²⁵ = 19765859 is a prime.

It is not a weakly prime, because it can be changed into another prime (53320391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26660145 + 26660146.

It is an arithmetic number, because the mean of its divisors is an integer number (26660146).

Almost surely, 2^53320291 is an apocalyptic number.

53320291 is a deficient number, since it is larger than the sum of its proper divisors (1).

53320291 is an equidigital number, since it uses as much as digits as its factorization.

53320291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 53320291 is about 7302.0744312832. The cubic root of 53320291 is about 376.3837257870.

The spelling of 53320291 in words is "fifty-three million, three hundred twenty thousand, two hundred ninety-one".