315050562450221 has 4 divisors (see below), whose sum is σ = 339285221100252. Its totient is φ = 290815903800192.

The previous prime is 315050562450181. The next prime is 315050562450233. The reversal of 315050562450221 is 122054265050513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 187364766015625 + 127685796434596 = 13688125^2 + 11299814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315050562450221 is a prime.

It is a super-2 number, since 2×315050562450221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315050562450821) 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, 12117329324996 + ... + 12117329325021.

It is an arithmetic number, because the mean of its divisors is an integer number (84821305275063).

Almost surely, 2^{315050562450221} is an apocalyptic number.

It is an amenable number.

315050562450221 is a deficient number, since it is larger than the sum of its proper divisors (24234658650031).

315050562450221 is a wasteful number, since it uses less digits than its factorization.

315050562450221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24234658650030.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 315050562450221 in words is "three hundred fifteen trillion, fifty billion, five hundred sixty-two million, four hundred fifty thousand, two hundred twenty-one".