55413780 has 48 divisors (see below), whose sum is σ = 160513920. Its totient is φ = 14267008.

The previous prime is 55413767. The next prime is 55413781. The reversal of 55413780 is 8731455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55413781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14184 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (3344040).

Almost surely, 2^55413780 is an apocalyptic number.

It is an amenable number.

55413780 is an abundant number, since it is smaller than the sum of its proper divisors (105100140).

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

55413780 is a wasteful number, since it uses less digits than its factorization.

55413780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31888 (or 31886 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 55413780 is about 7444.0432561881. The cubic root of 55413780 is about 381.2465526876.

The spelling of 55413780 in words is "fifty-five million, four hundred thirteen thousand, seven hundred eighty".