55738872 has 192 divisors, whose sum is σ = 183768000. Its totient is φ = 15240960.

The previous prime is 55738871. The next prime is 55738873. The reversal of 55738872 is 27883755.

55738872 is a `hidden beast` number, since 5 + 573 + 8 + 8 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (55738871) and next prime (55738873).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55738871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 913722 + ... + 913782.

It is an arithmetic number, because the mean of its divisors is an integer number (957125).

Almost surely, 2^55738872 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 55738872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91884000).

55738872 is an abundant number, since it is smaller than the sum of its proper divisors (128029128).

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

55738872 is a wasteful number, since it uses less digits than its factorization.

55738872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 110 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 55738872 is about 7465.8470383474. The cubic root of 55738872 is about 381.9906433022.

The spelling of 55738872 in words is "fifty-five million, seven hundred thirty-eight thousand, eight hundred seventy-two".