90251107 has 2 divisors, whose sum is σ = 90251108. Its totient is φ = 90251106.

The previous prime is 90251099. The next prime is 90251111. The reversal of 90251107 is 70115209.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90251107 - 2³ = 90251099 is a prime.

It is not a weakly prime, because it can be changed into another prime (90251207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45125553 + 45125554.

It is an arithmetic number, because the mean of its divisors is an integer number (45125554).

Almost surely, 2^90251107 is an apocalyptic number.

90251107 is a deficient number, since it is larger than the sum of its proper divisors (1).

90251107 is an equidigital number, since it uses as much as digits as its factorization.

90251107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 90251107 is about 9500.0582629792. The cubic root of 90251107 is about 448.5568698970.

The spelling of 90251107 in words is "ninety million, two hundred fifty-one thousand, one hundred seven".