52240013 has 16 divisors (see below), whose sum is σ = 60710016. Its totient is φ = 44029440.

The previous prime is 52239989. The next prime is 52240043. The reversal of 52240013 is 31004225.

It is not a de Polignac number, because 52240013 - 2²² = 48045709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52239973 and 52240000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52240043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166745 + ... + 167057.

It is an arithmetic number, because the mean of its divisors is an integer number (3794376).

Almost surely, 2^52240013 is an apocalyptic number.

It is an amenable number.

52240013 is a deficient number, since it is larger than the sum of its proper divisors (8470003).

52240013 is a wasteful number, since it uses less digits than its factorization.

52240013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 52240013 is about 7227.7252991519. The cubic root of 52240013 is about 373.8244980000.

Adding to 52240013 its reverse (31004225), we get a palindrome (83244238).

The spelling of 52240013 in words is "fifty-two million, two hundred forty thousand, thirteen".