55767744 has 112 divisors (see below), whose sum is σ = 167030400. Its totient is φ = 18240768.

The previous prime is 55767743. The next prime is 55767787. The reversal of 55767744 is 44776755.

55767744 is a `hidden beast` number, since 5 + 576 + 7 + 74 + 4 = 666.

It is a super-2 number, since 2×55767744² = 6220082541699072, 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 55767744.

It is not an unprimeable number, because it can be changed into a prime (55767743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101679 + ... + 102225.

Almost surely, 2^55767744 is an apocalyptic number.

55767744 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55767744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83515200).

55767744 is an abundant number, since it is smaller than the sum of its proper divisors (111262656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55767744 is a wasteful number, since it uses less digits than its factorization.

55767744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 611 counting only the distinct ones).

The product of its digits is 823200, while the sum is 45.

The square root of 55767744 is about 7467.7803931289. The cubic root of 55767744 is about 382.0565872879.

The spelling of 55767744 in words is "fifty-five million, seven hundred sixty-seven thousand, seven hundred forty-four".