55580740 has 24 divisors (see below), whose sum is σ = 118321560. Its totient is φ = 21927168.

The previous prime is 55580731. The next prime is 55580741. The reversal of 55580740 is 4708555.

It can be written as a sum of positive squares in 4 ways, for example, as 9449476 + 46131264 = 3074^2 + 6792^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55580696 and 55580705.

It is not an unprimeable number, because it can be changed into a prime (55580741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17575 + ... + 20494.

It is an arithmetic number, because the mean of its divisors is an integer number (4930065).

Almost surely, 2^55580740 is an apocalyptic number.

It is an amenable number.

55580740 is an abundant number, since it is smaller than the sum of its proper divisors (62740820).

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

55580740 is a wasteful number, since it uses less digits than its factorization.

55580740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38151 (or 38149 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 55580740 is about 7455.2491574729. The cubic root of 55580740 is about 381.6290634586.

The spelling of 55580740 in words is "fifty-five million, five hundred eighty thousand, seven hundred forty".