55178460 has 72 divisors (see below), whose sum is σ = 171291120. Its totient is φ = 14370048.

The previous prime is 55178443. The next prime is 55178467. The reversal of 55178460 is 6487155.

55178460 is a `hidden beast` number, since 5 + 517 + 84 + 60 = 666.

It is a hoax number, since the sum of its digits (36) 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 (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55178467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4176 + ... + 11304.

Almost surely, 2^55178460 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 55178460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85645560).

55178460 is an abundant number, since it is smaller than the sum of its proper divisors (116112660).

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

55178460 is a wasteful number, since it uses less digits than its factorization.

55178460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7187 (or 7182 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 55178460 is about 7428.2205136897. The cubic root of 55178460 is about 380.7061201235.

The spelling of 55178460 in words is "fifty-five million, one hundred seventy-eight thousand, four hundred sixty".