55143072 has 48 divisors (see below), whose sum is σ = 160836480. Its totient is φ = 18380736.

The previous prime is 55143059. The next prime is 55143083. The reversal of 55143072 is 27034155.

It is a happy number.

55143072 is a `hidden beast` number, since 551 + 43 + 0 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31048 + ... + 32775.

It is an arithmetic number, because the mean of its divisors is an integer number (3350760).

Almost surely, 2^55143072 is an apocalyptic number.

It is an amenable number.

55143072 is an abundant number, since it is smaller than the sum of its proper divisors (105693408).

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

55143072 is a wasteful number, since it uses less digits than its factorization.

55143072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63842 (or 63828 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55143072 is about 7425.8381345138. The cubic root of 55143072 is about 380.6247157172.

The spelling of 55143072 in words is "fifty-five million, one hundred forty-three thousand, seventy-two".