55767140 has 192 divisors, whose sum is σ = 154441728. Its totient is φ = 16588800.

The previous prime is 55767137. The next prime is 55767167. The reversal of 55767140 is 4176755.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55767140.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1507202 + ... + 1507238.

It is an arithmetic number, because the mean of its divisors is an integer number (804384).

Almost surely, 2^55767140 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 55767140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77220864).

55767140 is an abundant number, since it is smaller than the sum of its proper divisors (98674588).

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

55767140 is a wasteful number, since it uses less digits than its factorization.

55767140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 55767140 is about 7467.7399526229. The cubic root of 55767140 is about 382.0552079779.

The spelling of 55767140 in words is "fifty-five million, seven hundred sixty-seven thousand, one hundred forty".