55788372 has 96 divisors (see below), whose sum is σ = 152127360. Its totient is φ = 17660160.

The previous prime is 55788361. The next prime is 55788377. The reversal of 55788372 is 27388755.

55788372 is a `hidden beast` number, since 5 + 578 + 8 + 3 + 72 = 666.

It is a super-2 number, since 2×55788372² = 6224684900820768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55788377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190258 + ... + 190550.

It is an arithmetic number, because the mean of its divisors is an integer number (1584660).

Almost surely, 2^55788372 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 55788372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76063680).

55788372 is an abundant number, since it is smaller than the sum of its proper divisors (96338988).

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

55788372 is a wasteful number, since it uses less digits than its factorization.

55788372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 382 counting only the distinct ones).

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

The square root of 55788372 is about 7469.1613987114. The cubic root of 55788372 is about 382.1036879426.

The spelling of 55788372 in words is "fifty-five million, seven hundred eighty-eight thousand, three hundred seventy-two".