53499091 has 2 divisors, whose sum is σ = 53499092. Its totient is φ = 53499090.

The previous prime is 53499067. The next prime is 53499097. The reversal of 53499091 is 19099435.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53499091 - 2²¹ = 51401939 is a prime.

It is not a weakly prime, because it can be changed into another prime (53499097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26749545 + 26749546.

It is an arithmetic number, because the mean of its divisors is an integer number (26749546).

Almost surely, 2^53499091 is an apocalyptic number.

53499091 is a deficient number, since it is larger than the sum of its proper divisors (1).

53499091 is an equidigital number, since it uses as much as digits as its factorization.

53499091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 53499091 is about 7314.3072809392. The cubic root of 53499091 is about 376.8039680968.

The spelling of 53499091 in words is "fifty-three million, four hundred ninety-nine thousand, ninety-one".