55534513 has 4 divisors (see below), whose sum is σ = 56582388. Its totient is φ = 54486640.

The previous prime is 55534499. The next prime is 55534579. The reversal of 55534513 is 31543555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40347904 + 15186609 = 6352^2 + 3897^2 .

It is a cyclic number.

It is not a de Polignac number, because 55534513 - 2¹³ = 55526321 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55534813) 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, 523858 + ... + 523963.

It is an arithmetic number, because the mean of its divisors is an integer number (14145597).

Almost surely, 2^55534513 is an apocalyptic number.

55534513 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

55534513 is a deficient number, since it is larger than the sum of its proper divisors (1047875).

55534513 is a wasteful number, since it uses less digits than its factorization.

55534513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047874.

The product of its digits is 22500, while the sum is 31.

The square root of 55534513 is about 7452.1482137703. The cubic root of 55534513 is about 381.5232326747.

The spelling of 55534513 in words is "fifty-five million, five hundred thirty-four thousand, five hundred thirteen".