52240521 has 8 divisors (see below), whose sum is σ = 72682560. Its totient is φ = 33312752.

The previous prime is 52240511. The next prime is 52240523. The reversal of 52240521 is 12504225.

It is a happy number.

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 52240521 - 2⁷ = 52240393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52240523) 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, 378486 + ... + 378623.

It is an arithmetic number, because the mean of its divisors is an integer number (9085320).

Almost surely, 2^52240521 is an apocalyptic number.

It is an amenable number.

52240521 is a deficient number, since it is larger than the sum of its proper divisors (20442039).

52240521 is a wasteful number, since it uses less digits than its factorization.

52240521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757135.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 52240521 is about 7227.7604415199. The cubic root of 52240521 is about 373.8257097291.

Adding to 52240521 its reverse (12504225), we get a palindrome (64744746).

The spelling of 52240521 in words is "fifty-two million, two hundred forty thousand, five hundred twenty-one".