315772049 has 2 divisors, whose sum is σ = 315772050. Its totient is φ = 315772048.

The previous prime is 315772031. The next prime is 315772081. The reversal of 315772049 is 940277513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315701824 + 70225 = 17768^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 315772049 - 2²⁴ = 298994833 is a prime.

It is not a weakly prime, because it can be changed into another prime (315775049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157886024 + 157886025.

It is an arithmetic number, because the mean of its divisors is an integer number (157886025).

Almost surely, 2^315772049 is an apocalyptic number.

It is an amenable number.

315772049 is a deficient number, since it is larger than the sum of its proper divisors (1).

315772049 is an equidigital number, since it uses as much as digits as its factorization.

315772049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 315772049 is about 17769.9760551330. The cubic root of 315772049 is about 680.9646408716.

The spelling of 315772049 in words is "three hundred fifteen million, seven hundred seventy-two thousand, forty-nine".