47915613 has 12 divisors (see below), whose sum is σ = 69718428. Its totient is φ = 31709760.

The previous prime is 47915599. The next prime is 47915617. The reversal of 47915613 is 31651974.

47915613 is a `hidden beast` number, since 4 + 7 + 91 + 561 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35784324 + 12131289 = 5982^2 + 3483^2 .

It is not a de Polignac number, because 47915613 - 2¹² = 47911517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47915617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18198 + ... + 20663.

It is an arithmetic number, because the mean of its divisors is an integer number (5809869).

Almost surely, 2^47915613 is an apocalyptic number.

It is an amenable number.

47915613 is a deficient number, since it is larger than the sum of its proper divisors (21802815).

47915613 is a wasteful number, since it uses less digits than its factorization.

47915613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39004 (or 39001 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 47915613 is about 6922.1104440770. The cubic root of 47915613 is about 363.2110195323.

It can be divided in two parts, 4791 and 5613, that added together give a square (10404 = 102²).

The spelling of 47915613 in words is "forty-seven million, nine hundred fifteen thousand, six hundred thirteen".