52518947 has 18 divisors (see below), whose sum is σ = 58705668. Its totient is φ = 46960992.

The previous prime is 52518941. The next prime is 52519007. The reversal of 52518947 is 74981525.

It is a de Polignac number, because none of the positive numbers 2^k-52518947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52518941) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 231248 + ... + 231474.

It is an arithmetic number, because the mean of its divisors is an integer number (3261426).

Almost surely, 2^52518947 is an apocalyptic number.

52518947 is a deficient number, since it is larger than the sum of its proper divisors (6186721).

52518947 is a wasteful number, since it uses less digits than its factorization.

52518947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 277 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The square root of 52518947 is about 7246.9957223666. The cubic root of 52518947 is about 374.4886589162.

The spelling of 52518947 in words is "fifty-two million, five hundred eighteen thousand, nine hundred forty-seven".