251135057 has 2 divisors, whose sum is σ = 251135058. Its totient is φ = 251135056.

The previous prime is 251135051. The next prime is 251135063. The reversal of 251135057 is 750531152.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (251135051) and next prime (251135063).

It can be written as a sum of positive squares in only one way, i.e., 202749121 + 48385936 = 14239^2 + 6956^2 .

It is a cyclic number.

It is not a de Polignac number, because 251135057 - 2⁶ = 251134993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (251135051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125567528 + 125567529.

It is an arithmetic number, because the mean of its divisors is an integer number (125567529).

Almost surely, 2^251135057 is an apocalyptic number.

It is an amenable number.

251135057 is a deficient number, since it is larger than the sum of its proper divisors (1).

251135057 is an equidigital number, since it uses as much as digits as its factorization.

251135057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 251135057 is about 15847.2413056658. The cubic root of 251135057 is about 630.9124738475.

The spelling of 251135057 in words is "two hundred fifty-one million, one hundred thirty-five thousand, fifty-seven".