53155872 has 384 divisors, whose sum is σ = 209018880. Its totient is φ = 12718080.

The previous prime is 53155871. The next prime is 53155877. The reversal of 53155872 is 27855135.

53155872 is a `hidden beast` number, since 5 + 31 + 558 + 72 = 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 (53155871) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1130953 + ... + 1130999.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^53155872 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 53155872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104509440).

53155872 is an abundant number, since it is smaller than the sum of its proper divisors (155863008).

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

53155872 is a wasteful number, since it uses less digits than its factorization.

53155872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 87 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 53155872 is about 7290.8073627000. The cubic root of 53155872 is about 375.9964538673.

The spelling of 53155872 in words is "fifty-three million, one hundred fifty-five thousand, eight hundred seventy-two".