53155980 has 96 divisors (see below), whose sum is σ = 166622400. Its totient is φ = 14068224.

The previous prime is 53155951. The next prime is 53155987. The reversal of 53155980 is 8955135.

It is a happy number.

53155980 is a `hidden beast` number, since 53 + 15 + 598 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (53155987) 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 31 ways as a sum of consecutive naturals, for example, 93136 + ... + 93704.

It is an arithmetic number, because the mean of its divisors is an integer number (1735650).

Almost surely, 2^53155980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53155980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83311200).

53155980 is an abundant number, since it is smaller than the sum of its proper divisors (113466420).

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

53155980 is a wasteful number, since it uses less digits than its factorization.

53155980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 53155980 is about 7290.8147692833. The cubic root of 53155980 is about 375.9967085120.

The spelling of 53155980 in words is "fifty-three million, one hundred fifty-five thousand, nine hundred eighty".