52254721 has 8 divisors (see below), whose sum is σ = 52905600. Its totient is φ = 51607920.

The previous prime is 52254701. The next prime is 52254733. The reversal of 52254721 is 12745225.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52254721 - 2²³ = 43866113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52254721.

It is not an unprimeable number, because it can be changed into a prime (52254701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30475 + ... + 32143.

It is an arithmetic number, because the mean of its divisors is an integer number (6613200).

Almost surely, 2^52254721 is an apocalyptic number.

It is an amenable number.

52254721 is a deficient number, since it is larger than the sum of its proper divisors (650879).

52254721 is a wasteful number, since it uses less digits than its factorization.

52254721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its digits is 5600, while the sum is 28.

The square root of 52254721 is about 7228.7426984227. The cubic root of 52254721 is about 373.8595777181.

Adding to 52254721 its reverse (12745225), we get a palindrome (64999946).

It can be divided in two parts, 52254 and 721, that added together give a triangular number (52975 = T₃₂₅).

The spelling of 52254721 in words is "fifty-two million, two hundred fifty-four thousand, seven hundred twenty-one".