55580736 has 56 divisors (see below), whose sum is σ = 147665440. Its totient is φ = 18450432.

The previous prime is 55580731. The next prime is 55580741. The reversal of 55580736 is 63708555.

It is an interprime number because it is at equal distance from previous prime (55580731) and next prime (55580741).

It is a junction number, because it is equal to n+sod(n) for n = 55580694 and 55580703.

It is not an unprimeable number, because it can be changed into a prime (55580731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64275 + ... + 65133.

Almost surely, 2^55580736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55580736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73832720).

55580736 is an abundant number, since it is smaller than the sum of its proper divisors (92084704).

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

55580736 is a wasteful number, since it uses less digits than its factorization.

55580736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 55580736 is about 7455.2488892055. The cubic root of 55580736 is about 381.6290543037.

The spelling of 55580736 in words is "fifty-five million, five hundred eighty thousand, seven hundred thirty-six".