55542513 has 32 divisors (see below), whose sum is σ = 83383552. Its totient is φ = 32659200.

The previous prime is 55542503. The next prime is 55542517. The reversal of 55542513 is 31524555.

It is a happy number.

It is not a de Polignac number, because 55542513 - 2¹⁷ = 55411441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55542517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87708 + ... + 88338.

It is an arithmetic number, because the mean of its divisors is an integer number (2605736).

Almost surely, 2^55542513 is an apocalyptic number.

It is an amenable number.

55542513 is a deficient number, since it is larger than the sum of its proper divisors (27841039).

55542513 is a wasteful number, since it uses less digits than its factorization.

55542513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745.

The product of its digits is 15000, while the sum is 30.

The square root of 55542513 is about 7452.6849524182. The cubic root of 55542513 is about 381.5415518492.

The spelling of 55542513 in words is "fifty-five million, five hundred forty-two thousand, five hundred thirteen".