55960820 has 24 divisors (see below), whose sum is σ = 117719784. Its totient is φ = 22345856.

The previous prime is 55960819. The next prime is 55960823. The reversal of 55960820 is 2806955.

It can be written as a sum of positive squares in 4 ways, for example, as 28858384 + 27102436 = 5372^2 + 5206^2 .

It is a super-2 number, since 2×55960820² = 6263226750144800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55960823) 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, 11474 + ... + 15606.

It is an arithmetic number, because the mean of its divisors is an integer number (4904991).

Almost surely, 2^55960820 is an apocalyptic number.

It is an amenable number.

55960820 is an abundant number, since it is smaller than the sum of its proper divisors (61758964).

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

55960820 is a wasteful number, since it uses less digits than its factorization.

55960820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4819 (or 4817 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 55960820 is about 7480.6964916377. The cubic root of 55960820 is about 382.4969911621.

The spelling of 55960820 in words is "fifty-five million, nine hundred sixty thousand, eight hundred twenty".