290625971 has 2 divisors, whose sum is σ = 290625972. Its totient is φ = 290625970.

The previous prime is 290625941. The next prime is 290626019. The reversal of 290625971 is 179526092.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 290625971 - 2²² = 286431667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (290625901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145312985 + 145312986.

It is an arithmetic number, because the mean of its divisors is an integer number (145312986).

Almost surely, 2^290625971 is an apocalyptic number.

290625971 is a deficient number, since it is larger than the sum of its proper divisors (1).

290625971 is an equidigital number, since it uses as much as digits as its factorization.

290625971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 290625971 is about 17047.7556000783. The cubic root of 290625971 is about 662.3865017862.

The spelling of 290625971 in words is "two hundred ninety million, six hundred twenty-five thousand, nine hundred seventy-one".