55771263 has 48 divisors (see below), whose sum is σ = 88208640. Its totient is φ = 33868800.

The previous prime is 55771259. The next prime is 55771273. The reversal of 55771263 is 36217755.

55771263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55771263 - 2² = 55771259 is a prime.

It is a super-2 number, since 2×55771263² = 6220867553230338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55771223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 493495 + ... + 493607.

It is an arithmetic number, because the mean of its divisors is an integer number (1837680).

Almost surely, 2^55771263 is an apocalyptic number.

55771263 is a deficient number, since it is larger than the sum of its proper divisors (32437377).

55771263 is a wasteful number, since it uses less digits than its factorization.

55771263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 237 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 55771263 is about 7468.0160015897. The cubic root of 55771263 is about 382.0646231688.

The spelling of 55771263 in words is "fifty-five million, seven hundred seventy-one thousand, two hundred sixty-three".