55402980 has 48 divisors (see below), whose sum is σ = 155542464. Its totient is φ = 14734720.

The previous prime is 55402951. The next prime is 55402981. The reversal of 55402980 is 8920455.

55402980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55402981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26659 + ... + 28661.

It is an arithmetic number, because the mean of its divisors is an integer number (3240468).

Almost surely, 2^55402980 is an apocalyptic number.

It is an amenable number.

55402980 is an abundant number, since it is smaller than the sum of its proper divisors (100139484).

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

55402980 is a wasteful number, since it uses less digits than its factorization.

55402980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 2474 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 55402980 is about 7443.3178086120. The cubic root of 55402980 is about 381.2217830949.

The spelling of 55402980 in words is "fifty-five million, four hundred two thousand, nine hundred eighty".