55771265 has 16 divisors (see below), whose sum is σ = 73469376. Its totient is φ = 40305600.

The previous prime is 55771259. The next prime is 55771273. The reversal of 55771265 is 56217755.

It is not a de Polignac number, because 55771265 - 2⁴ = 55771249 is a prime.

It is a super-2 number, since 2×55771265² = 6220867999400450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5855 + ... + 12075.

It is an arithmetic number, because the mean of its divisors is an integer number (4591836).

Almost surely, 2^55771265 is an apocalyptic number.

55771265 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55771265 is a deficient number, since it is larger than the sum of its proper divisors (17698111).

55771265 is a wasteful number, since it uses less digits than its factorization.

55771265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400.

The product of its digits is 73500, while the sum is 38.

The square root of 55771265 is about 7468.0161354941. The cubic root of 55771265 is about 382.0646277359.

The spelling of 55771265 in words is "fifty-five million, seven hundred seventy-one thousand, two hundred sixty-five".