90924157 has 2 divisors, whose sum is σ = 90924158. Its totient is φ = 90924156.

The previous prime is 90924149. The next prime is 90924161. The reversal of 90924157 is 75142909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89321401 + 1602756 = 9451^2 + 1266^2 .

It is a cyclic number.

It is not a de Polignac number, because 90924157 - 2³ = 90924149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90924137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45462078 + 45462079.

It is an arithmetic number, because the mean of its divisors is an integer number (45462079).

Almost surely, 2^90924157 is an apocalyptic number.

It is an amenable number.

90924157 is a deficient number, since it is larger than the sum of its proper divisors (1).

90924157 is an equidigital number, since it uses as much as digits as its factorization.

90924157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 90924157 is about 9535.4159321972. The cubic root of 90924157 is about 449.6691510516.

The spelling of 90924157 in words is "ninety million, nine hundred twenty-four thousand, one hundred fifty-seven".