55125756 has 72 divisors (see below), whose sum is σ = 166193664. Its totient is φ = 15063840.

The previous prime is 55125751. The next prime is 55125767. The reversal of 55125756 is 65752155.

It is a happy number.

55125756 is a `hidden beast` number, since 551 + 2 + 57 + 56 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 55125756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55125751) 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, 1041 + ... + 10551.

Almost surely, 2^55125756 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 55125756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83096832).

55125756 is an abundant number, since it is smaller than the sum of its proper divisors (111067908).

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

55125756 is a wasteful number, since it uses less digits than its factorization.

55125756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9551 (or 9546 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 55125756 is about 7424.6721139724. The cubic root of 55125756 is about 380.5848703517.

The spelling of 55125756 in words is "fifty-five million, one hundred twenty-five thousand, seven hundred fifty-six".