55831263 has 4 divisors (see below), whose sum is σ = 74441688. Its totient is φ = 37220840.

The previous prime is 55831229. The next prime is 55831267. The reversal of 55831263 is 36213855.

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

It is a cyclic number.

It is not a de Polignac number, because 55831263 - 2⁸ = 55831007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55831267) 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, 9305208 + ... + 9305213.

It is an arithmetic number, because the mean of its divisors is an integer number (18610422).

Almost surely, 2^55831263 is an apocalyptic number.

55831263 is a deficient number, since it is larger than the sum of its proper divisors (18610425).

55831263 is a wasteful number, since it uses less digits than its factorization.

55831263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18610424.

The product of its digits is 21600, while the sum is 33.

The square root of 55831263 is about 7472.0320529291. The cubic root of 55831263 is about 382.2015853508.

The spelling of 55831263 in words is "fifty-five million, eight hundred thirty-one thousand, two hundred sixty-three".