315556901 has 4 divisors (see below), whose sum is σ = 344243904. Its totient is φ = 286869900.

The previous prime is 315556867. The next prime is 315556903. The reversal of 315556901 is 109655513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315556901 - 2⁶ = 315556837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315556903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14343485 + ... + 14343506.

It is an arithmetic number, because the mean of its divisors is an integer number (86060976).

Almost surely, 2^315556901 is an apocalyptic number.

It is an amenable number.

315556901 is a deficient number, since it is larger than the sum of its proper divisors (28687003).

315556901 is a wasteful number, since it uses less digits than its factorization.

315556901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28687002.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 315556901 is about 17763.9213294813. The cubic root of 315556901 is about 680.8099496763.

The spelling of 315556901 in words is "three hundred fifteen million, five hundred fifty-six thousand, nine hundred one".