257150077 has 2 divisors, whose sum is σ = 257150078. Its totient is φ = 257150076.

The previous prime is 257150063. The next prime is 257150093. The reversal of 257150077 is 770051752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134073241 + 123076836 = 11579^2 + 11094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257150077 is a prime.

It is a super-2 number, since 2×257150077² = 132252324202211858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257150057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128575038 + 128575039.

It is an arithmetic number, because the mean of its divisors is an integer number (128575039).

Almost surely, 2^257150077 is an apocalyptic number.

It is an amenable number.

257150077 is a deficient number, since it is larger than the sum of its proper divisors (1).

257150077 is an equidigital number, since it uses as much as digits as its factorization.

257150077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17150, while the sum is 34.

The square root of 257150077 is about 16035.8996317637. The cubic root of 257150077 is about 635.9098511850.

The spelling of 257150077 in words is "two hundred fifty-seven million, one hundred fifty thousand, seventy-seven".