55057313 has 4 divisors (see below), whose sum is σ = 55138608. Its totient is φ = 54976020.

The previous prime is 55057309. The next prime is 55057349. The reversal of 55057313 is 31375055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55057313 - 2² = 55057309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55057393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39623 + ... + 40988.

It is an arithmetic number, because the mean of its divisors is an integer number (13784652).

Almost surely, 2^55057313 is an apocalyptic number.

It is an amenable number.

55057313 is a deficient number, since it is larger than the sum of its proper divisors (81295).

55057313 is an equidigital number, since it uses as much as digits as its factorization.

55057313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81294.

The product of its (nonzero) digits is 7875, while the sum is 29.

The square root of 55057313 is about 7420.0615226560. The cubic root of 55057313 is about 380.4272963488.

The spelling of 55057313 in words is "fifty-five million, fifty-seven thousand, three hundred thirteen".