55795513 has 4 divisors (see below), whose sum is σ = 59077620. Its totient is φ = 52513408.

The previous prime is 55795499. The next prime is 55795549. The reversal of 55795513 is 31559755.

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 50651689 + 5143824 = 7117^2 + 2268^2 .

It is a de Polignac number, because none of the positive numbers 2^k-55795513 is a prime.

It is a super-2 number, since 2×55795513² = 6226278541866338, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) 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 (55795013) 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, 1641028 + ... + 1641061.

It is an arithmetic number, because the mean of its divisors is an integer number (14769405).

Almost surely, 2^55795513 is an apocalyptic number.

It is an amenable number.

55795513 is a deficient number, since it is larger than the sum of its proper divisors (3282107).

55795513 is a wasteful number, since it uses less digits than its factorization.

55795513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282106.

The product of its digits is 118125, while the sum is 40.

The square root of 55795513 is about 7469.6394156612. The cubic root of 55795513 is about 382.1199905395.

The spelling of 55795513 in words is "fifty-five million, seven hundred ninety-five thousand, five hundred thirteen".