55717746 has 16 divisors (see below), whose sum is σ = 127354944. Its totient is φ = 15919344.

The previous prime is 55717679. The next prime is 55717769. The reversal of 55717746 is 64771755.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1326613 = 55717746 / (5 + 5 + 7 + 1 + 7 + 7 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 55717698 and 55717707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663265 + ... + 663348.

It is an arithmetic number, because the mean of its divisors is an integer number (7959684).

Almost surely, 2^55717746 is an apocalyptic number.

55717746 is an abundant number, since it is smaller than the sum of its proper divisors (71637198).

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

55717746 is a wasteful number, since it uses less digits than its factorization.

55717746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326625.

The product of its digits is 205800, while the sum is 42.

The square root of 55717746 is about 7464.4320614498. The cubic root of 55717746 is about 381.9423768422.

The spelling of 55717746 in words is "fifty-five million, seven hundred seventeen thousand, seven hundred forty-six".