250540457 has 2 divisors, whose sum is σ = 250540458. Its totient is φ = 250540456.

The previous prime is 250540439. The next prime is 250540547. The reversal of 250540457 is 754045052.

Together with next prime (250540547) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224520256 + 26020201 = 14984^2 + 5101^2 .

It is a cyclic number.

It is not a de Polignac number, because 250540457 - 2⁸ = 250540201 is a prime.

It is a Chen prime.

It is equal to p_13707239 and since 250540457 and 13707239 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (250540417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125270228 + 125270229.

It is an arithmetic number, because the mean of its divisors is an integer number (125270229).

Almost surely, 2^250540457 is an apocalyptic number.

It is an amenable number.

250540457 is a deficient number, since it is larger than the sum of its proper divisors (1).

250540457 is an equidigital number, since it uses as much as digits as its factorization.

250540457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 250540457 is about 15828.4698249704. The cubic root of 250540457 is about 630.4141536491.

The spelling of 250540457 in words is "two hundred fifty million, five hundred forty thousand, four hundred fifty-seven".