55775284 has 12 divisors (see below), whose sum is σ = 97784064. Its totient is φ = 27836984.

The previous prime is 55775281. The next prime is 55775297. The reversal of 55775284 is 48257755.

It is a super-2 number, since 2×55775284² = 6221764610561312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55775284.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55775281) 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, 10132 + ... + 14635.

It is an arithmetic number, because the mean of its divisors is an integer number (8148672).

Almost surely, 2^55775284 is an apocalyptic number.

It is an amenable number.

55775284 is a deficient number, since it is larger than the sum of its proper divisors (42008780).

55775284 is a wasteful number, since it uses less digits than its factorization.

55775284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25334 (or 25332 counting only the distinct ones).

The product of its digits is 392000, while the sum is 43.

The square root of 55775284 is about 7468.2852114793. The cubic root of 55775284 is about 382.0738049878.

The spelling of 55775284 in words is "fifty-five million, seven hundred seventy-five thousand, two hundred eighty-four".