52247249 has 4 divisors (see below), whose sum is σ = 52278336. Its totient is φ = 52216164.

The previous prime is 52247231. The next prime is 52247257. The reversal of 52247249 is 94274225.

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.

It is a cyclic number.

It is not a de Polignac number, because 52247249 - 2⁸ = 52246993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52247449) 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, 12869 + ... + 16434.

It is an arithmetic number, because the mean of its divisors is an integer number (13069584).

Almost surely, 2^52247249 is an apocalyptic number.

It is an amenable number.

52247249 is a deficient number, since it is larger than the sum of its proper divisors (31087).

52247249 is a wasteful number, since it uses less digits than its factorization.

52247249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31086.

The product of its digits is 40320, while the sum is 35.

The square root of 52247249 is about 7228.2258542467. The cubic root of 52247249 is about 373.8417572426.

The spelling of 52247249 in words is "fifty-two million, two hundred forty-seven thousand, two hundred forty-nine".