55143252 has 36 divisors (see below), whose sum is σ = 139615476. Its totient is φ = 18351360.

The previous prime is 55143247. The next prime is 55143281. The reversal of 55143252 is 25234155.

It is a happy number.

55143252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 53494596 + 1648656 = 7314^2 + 1284^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×55143252² = 6081556482271008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 41868 + ... + 43164.

Almost surely, 2^55143252 is an apocalyptic number.

It is an amenable number.

55143252 is an abundant number, since it is smaller than the sum of its proper divisors (84472224).

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

55143252 is a wasteful number, since it uses less digits than its factorization.

55143252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488 (or 2483 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 55143252 is about 7425.8502543480. The cubic root of 55143252 is about 380.6251298664.

The spelling of 55143252 in words is "fifty-five million, one hundred forty-three thousand, two hundred fifty-two".