55236513 has 16 divisors (see below), whose sum is σ = 76736000. Its totient is φ = 35303040.

The previous prime is 55236499. The next prime is 55236527. The reversal of 55236513 is 31563255.

It is an interprime number because it is at equal distance from previous prime (55236499) and next prime (55236527).

It is not a de Polignac number, because 55236513 - 2⁴ = 55236497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55236413) 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, 7413 + ... + 12861.

It is an arithmetic number, because the mean of its divisors is an integer number (4796000).

Almost surely, 2^55236513 is an apocalyptic number.

It is an amenable number.

55236513 is a deficient number, since it is larger than the sum of its proper divisors (21499487).

55236513 is a wasteful number, since it uses less digits than its factorization.

55236513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5592.

The product of its digits is 13500, while the sum is 30.

The square root of 55236513 is about 7432.1270844893. The cubic root of 55236513 is about 380.8395863716.

Adding to 55236513 its reverse (31563255), we get a palindrome (86799768).

The spelling of 55236513 in words is "fifty-five million, two hundred thirty-six thousand, five hundred thirteen".