90925291 has 2 divisors, whose sum is σ = 90925292. Its totient is φ = 90925290.

The previous prime is 90925273. The next prime is 90925297. The reversal of 90925291 is 19252909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90925291 - 2⁵ = 90925259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90925291.

It is not a weakly prime, because it can be changed into another prime (90925297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45462645 + 45462646.

It is an arithmetic number, because the mean of its divisors is an integer number (45462646).

Almost surely, 2^90925291 is an apocalyptic number.

90925291 is a deficient number, since it is larger than the sum of its proper divisors (1).

90925291 is an equidigital number, since it uses as much as digits as its factorization.

90925291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 90925291 is about 9535.4753945464. The cubic root of 90925291 is about 449.6710204583.

It can be divided in two parts, 90925 and 291, that multiplied together give a triangular number (26459175 = T₇₂₇₄).

The spelling of 90925291 in words is "ninety million, nine hundred twenty-five thousand, two hundred ninety-one".