52847397 has 14 divisors (see below), whose sum is σ = 79235942. Its totient is φ = 35231112.

The previous prime is 52847393. The next prime is 52847419. The reversal of 52847397 is 79374825.

It can be written as a sum of positive squares in only one way, i.e., 48525156 + 4322241 = 6966^2 + 2079^2 .

It is not a de Polignac number, because 52847397 - 2² = 52847393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52847393) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 35518 + ... + 36975.

Almost surely, 2^52847397 is an apocalyptic number.

It is an amenable number.

52847397 is a deficient number, since it is larger than the sum of its proper divisors (26388545).

52847397 is an frugal number, since it uses more digits than its factorization.

52847397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72511 (or 72496 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 52847397 is about 7269.6215169705. The cubic root of 52847397 is about 375.2677128341.

The spelling of 52847397 in words is "fifty-two million, eight hundred forty-seven thousand, three hundred ninety-seven".