55255313 has 4 divisors (see below), whose sum is σ = 55291428. Its totient is φ = 55219200.

The previous prime is 55255307. The next prime is 55255349. The reversal of 55255313 is 31355255.

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 53114944 + 2140369 = 7288^2 + 1463^2 .

It is a cyclic number.

It is not a de Polignac number, because 55255313 - 2¹⁰ = 55254289 is a prime.

It is a super-2 number, since 2×55255313² = 6106299229455938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55255303) 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, 15656 + ... + 18857.

It is an arithmetic number, because the mean of its divisors is an integer number (13822857).

Almost surely, 2^55255313 is an apocalyptic number.

It is an amenable number.

55255313 is a deficient number, since it is larger than the sum of its proper divisors (36115).

55255313 is a wasteful number, since it uses less digits than its factorization.

55255313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36114.

The product of its digits is 11250, while the sum is 29.

The square root of 55255313 is about 7433.3917561232. The cubic root of 55255313 is about 380.8827883027.

The spelling of 55255313 in words is "fifty-five million, two hundred fifty-five thousand, three hundred thirteen".