315564101 has 2 divisors, whose sum is σ = 315564102. Its totient is φ = 315564100.

The previous prime is 315564049. The next prime is 315564121. The reversal of 315564101 is 101465513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312052225 + 3511876 = 17665^2 + 1874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315564101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315564121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157782050 + 157782051.

It is an arithmetic number, because the mean of its divisors is an integer number (157782051).

Almost surely, 2^315564101 is an apocalyptic number.

It is an amenable number.

315564101 is a deficient number, since it is larger than the sum of its proper divisors (1).

315564101 is an equidigital number, since it uses as much as digits as its factorization.

315564101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 315564101 is about 17764.1239862820. The cubic root of 315564101 is about 680.8151276060.

The spelling of 315564101 in words is "three hundred fifteen million, five hundred sixty-four thousand, one hundred one".