55152513 has 12 divisors (see below), whose sum is σ = 85792980. Its totient is φ = 33939936.

The previous prime is 55152511. The next prime is 55152521. The reversal of 55152513 is 31525155.

It can be written as a sum of positive squares in 2 ways, for example, as 32798529 + 22353984 = 5727^2 + 4728^2 .

It is not a de Polignac number, because 55152513 - 2¹ = 55152511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55152511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235578 + ... + 235811.

It is an arithmetic number, because the mean of its divisors is an integer number (7149415).

Almost surely, 2^55152513 is an apocalyptic number.

It is an amenable number.

55152513 is a deficient number, since it is larger than the sum of its proper divisors (30640467).

55152513 is a wasteful number, since it uses less digits than its factorization.

55152513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471408 (or 471405 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 55152513 is about 7426.4737931269. The cubic root of 55152513 is about 380.6464366258.

Adding to 55152513 its reverse (31525155), we get a palindrome (86677668).

The spelling of 55152513 in words is "fifty-five million, one hundred fifty-two thousand, five hundred thirteen".