55255311 has 8 divisors (see below), whose sum is σ = 81859760. Its totient is φ = 36836856.

The previous prime is 55255307. The next prime is 55255349. The reversal of 55255311 is 11355255.

It is not a de Polignac number, because 55255311 - 2² = 55255307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2046493 = 55255311 / (5 + 5 + 2 + 5 + 5 + 3 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55255381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1023220 + ... + 1023273.

It is an arithmetic number, because the mean of its divisors is an integer number (10232470).

Almost surely, 2^55255311 is an apocalyptic number.

55255311 is a deficient number, since it is larger than the sum of its proper divisors (26604449).

55255311 is a wasteful number, since it uses less digits than its factorization.

55255311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046502 (or 2046496 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 55255311 is about 7433.3916215951. The cubic root of 55255311 is about 380.8827837072.

The spelling of 55255311 in words is "fifty-five million, two hundred fifty-five thousand, three hundred eleven".