55739568 has 20 divisors (see below), whose sum is σ = 143994008. Its totient is φ = 18579840.

The previous prime is 55739561. The next prime is 55739573. The reversal of 55739568 is 86593755.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1161241 = 55739568 / (5 + 5 + 7 + 3 + 9 + 5 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (55739561) 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, 580573 + ... + 580668.

Almost surely, 2^55739568 is an apocalyptic number.

It is an amenable number.

55739568 is an abundant number, since it is smaller than the sum of its proper divisors (88254440).

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

55739568 is a wasteful number, since it uses less digits than its factorization.

55739568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161252 (or 1161246 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 48.

The square root of 55739568 is about 7465.8936504614. The cubic root of 55739568 is about 381.9922332421.

The spelling of 55739568 in words is "fifty-five million, seven hundred thirty-nine thousand, five hundred sixty-eight".