52051513 has 4 divisors (see below), whose sum is σ = 53159040. Its totient is φ = 50943988.

The previous prime is 52051477. The next prime is 52051523. The reversal of 52051513 is 31515025.

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 52051513 - 2¹⁷ = 51920441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52051523) 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, 553693 + ... + 553786.

It is an arithmetic number, because the mean of its divisors is an integer number (13289760).

Almost surely, 2^52051513 is an apocalyptic number.

It is an amenable number.

52051513 is a deficient number, since it is larger than the sum of its proper divisors (1107527).

52051513 is a wasteful number, since it uses less digits than its factorization.

52051513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107526.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 52051513 is about 7214.6734506837. The cubic root of 52051513 is about 373.3743268301.

Adding to 52051513 its reverse (31515025), we get a palindrome (83566538).

The spelling of 52051513 in words is "fifty-two million, fifty-one thousand, five hundred thirteen".