90924161 has 2 divisors, whose sum is σ = 90924162. Its totient is φ = 90924160.

The previous prime is 90924157. The next prime is 90924167. The reversal of 90924161 is 16142909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86843761 + 4080400 = 9319^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 90924161 - 2² = 90924157 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90924167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45462080 + 45462081.

It is an arithmetic number, because the mean of its divisors is an integer number (45462081).

Almost surely, 2^90924161 is an apocalyptic number.

It is an amenable number.

90924161 is a deficient number, since it is larger than the sum of its proper divisors (1).

90924161 is an equidigital number, since it uses as much as digits as its factorization.

90924161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 90924161 is about 9535.4161419416. The cubic root of 90924161 is about 449.6691576456.

The spelling of 90924161 in words is "ninety million, nine hundred twenty-four thousand, one hundred sixty-one".