55853172 has 48 divisors (see below), whose sum is σ = 145405120. Its totient is φ = 18540576.

The previous prime is 55853167. The next prime is 55853183. The reversal of 55853172 is 27135855.

55853172 is a `hidden beast` number, since 5 + 58 + 531 + 72 = 666.

It is a super-3 number, since 3×55853172³ (a number of 24 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28983 + ... + 30849.

Almost surely, 2^55853172 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 55853172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72702560).

55853172 is an abundant number, since it is smaller than the sum of its proper divisors (89551948).

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

55853172 is a wasteful number, since it uses less digits than its factorization.

55853172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157 (or 2149 counting only the distinct ones).

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

The square root of 55853172 is about 7473.4979761822. The cubic root of 55853172 is about 382.2515726340.

The spelling of 55853172 in words is "fifty-five million, eight hundred fifty-three thousand, one hundred seventy-two".