9090251 has 2 divisors, whose sum is σ = 9090252. Its totient is φ = 9090250.

The previous prime is 9090247. The next prime is 9090259. The reversal of 9090251 is 1520909.

It is a happy number.

9090251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9090251 - 2² = 9090247 is a prime.

It is equal to p₆₀₈₀₇₅ and since 9090251 and 608075 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9090251.

It is not a weakly prime, because it can be changed into another prime (9090259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545125 + 4545126.

It is an arithmetic number, because the mean of its divisors is an integer number (4545126).

Almost surely, 2^9090251 is an apocalyptic number.

9090251 is a deficient number, since it is larger than the sum of its proper divisors (1).

9090251 is an equidigital number, since it uses as much as digits as its factorization.

9090251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 9090251 is about 3015.0043117714. The cubic root of 9090251 is about 208.7013660353.

Subtracting from 9090251 its sum of digits (26), we obtain a square (9090225 = 3015²).

The spelling of 9090251 in words is "nine million, ninety thousand, two hundred fifty-one".