52440147 has 12 divisors (see below), whose sum is σ = 76660584. Its totient is φ = 34538400.

The previous prime is 52440131. The next prime is 52440173. The reversal of 52440147 is 74104425.

It is not a de Polignac number, because 52440147 - 2⁴ = 52440131 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 52440147.

It is not an unprimeable number, because it can be changed into a prime (52440187) 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, 34354 + ... + 35847.

It is an arithmetic number, because the mean of its divisors is an integer number (6388382).

Almost surely, 2^52440147 is an apocalyptic number.

52440147 is a deficient number, since it is larger than the sum of its proper divisors (24220437).

52440147 is a wasteful number, since it uses less digits than its factorization.

52440147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70290 (or 70287 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 52440147 is about 7241.5569458508. The cubic root of 52440147 is about 374.3012695440.

The spelling of 52440147 in words is "fifty-two million, four hundred forty thousand, one hundred forty-seven".