55300780 has 12 divisors (see below), whose sum is σ = 116131680. Its totient is φ = 22120304.

The previous prime is 55300757. The next prime is 55300781. The reversal of 55300780 is 8700355.

It is not an unprimeable number, because it can be changed into a prime (55300781) 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, 1382500 + ... + 1382539.

It is an arithmetic number, because the mean of its divisors is an integer number (9677640).

Almost surely, 2^55300780 is an apocalyptic number.

It is an amenable number.

55300780 is an abundant number, since it is smaller than the sum of its proper divisors (60830900).

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

55300780 is a wasteful number, since it uses less digits than its factorization.

55300780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765048 (or 2765046 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 55300780 is about 7436.4494215990. The cubic root of 55300780 is about 380.9872298427.

The spelling of 55300780 in words is "fifty-five million, three hundred thousand, seven hundred eighty".