91253039 has 2 divisors, whose sum is σ = 91253040. Its totient is φ = 91253038.

The previous prime is 91253023. The next prime is 91253077. The reversal of 91253039 is 93035219.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91253039 - 2⁴ = 91253023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91252996 and 91253014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91253089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45626519 + 45626520.

It is an arithmetic number, because the mean of its divisors is an integer number (45626520).

Almost surely, 2^91253039 is an apocalyptic number.

91253039 is a deficient number, since it is larger than the sum of its proper divisors (1).

91253039 is an equidigital number, since it uses as much as digits as its factorization.

91253039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 91253039 is about 9552.6456544771. The cubic root of 91253039 is about 450.2106651488.

The spelling of 91253039 in words is "ninety-one million, two hundred fifty-three thousand, thirty-nine".