55748740 has 24 divisors (see below), whose sum is σ = 117277272. Its totient is φ = 22260480.

The previous prime is 55748723. The next prime is 55748761. The reversal of 55748740 is 4784755.

It can be written as a sum of positive squares in 4 ways, for example, as 23213124 + 32535616 = 4818^2 + 5704^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55748693 and 55748702.

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, 11112 + ... + 15328.

It is an arithmetic number, because the mean of its divisors is an integer number (4886553).

Almost surely, 2^55748740 is an apocalyptic number.

It is an amenable number.

55748740 is an abundant number, since it is smaller than the sum of its proper divisors (61528532).

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

55748740 is a wasteful number, since it uses less digits than its factorization.

55748740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4887 (or 4885 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 55748740 is about 7466.5078852165. The cubic root of 55748740 is about 382.0131844905.

The spelling of 55748740 in words is "fifty-five million, seven hundred forty-eight thousand, seven hundred forty".