315052649 has 2 divisors, whose sum is σ = 315052650. Its totient is φ = 315052648.

The previous prime is 315052579. The next prime is 315052657. The reversal of 315052649 is 946250513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272019049 + 43033600 = 16493^2 + 6560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315052649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315052679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157526324 + 157526325.

It is an arithmetic number, because the mean of its divisors is an integer number (157526325).

Almost surely, 2^315052649 is an apocalyptic number.

It is an amenable number.

315052649 is a deficient number, since it is larger than the sum of its proper divisors (1).

315052649 is an equidigital number, since it uses as much as digits as its factorization.

315052649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 315052649 is about 17749.7225048731. The cubic root of 315052649 is about 680.4471172768.

The spelling of 315052649 in words is "three hundred fifteen million, fifty-two thousand, six hundred forty-nine".