47515313 has 4 divisors (see below), whose sum is σ = 47540208. Its totient is φ = 47490420.

The previous prime is 47515297. The next prime is 47515337. The reversal of 47515313 is 31351574.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31351574 = 2 ⋅15675787.

It is a cyclic number.

It is not a de Polignac number, because 47515313 - 2⁴ = 47515297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47515913) 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, 9323 + ... + 13488.

It is an arithmetic number, because the mean of its divisors is an integer number (11885052).

Almost surely, 2^47515313 is an apocalyptic number.

It is an amenable number.

47515313 is a deficient number, since it is larger than the sum of its proper divisors (24895).

47515313 is a wasteful number, since it uses less digits than its factorization.

47515313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24894.

The product of its digits is 6300, while the sum is 29.

The square root of 47515313 is about 6893.1352083069. The cubic root of 47515313 is about 362.1967353433.

Adding to 47515313 its reverse (31351574), we get a palindrome (78866887).

The spelling of 47515313 in words is "forty-seven million, five hundred fifteen thousand, three hundred thirteen".