55929880 has 16 divisors (see below), whose sum is σ = 125842320. Its totient is φ = 22371936.

The previous prime is 55929877. The next prime is 55929889. The reversal of 55929880 is 8892955.

It is a self number, because there is not a number n which added to its sum of digits gives 55929880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55929889) 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, 699084 + ... + 699163.

It is an arithmetic number, because the mean of its divisors is an integer number (7865145).

Almost surely, 2^55929880 is an apocalyptic number.

It is an amenable number.

55929880 is an abundant number, since it is smaller than the sum of its proper divisors (69912440).

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

55929880 is a wasteful number, since it uses less digits than its factorization.

55929880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398258 (or 1398254 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 55929880 is about 7478.6282164579. The cubic root of 55929880 is about 382.4264856511.

The spelling of 55929880 in words is "fifty-five million, nine hundred twenty-nine thousand, eight hundred eighty".