55725120 has 168 divisors, whose sum is σ = 209214720. Its totient is φ = 13501440.

The previous prime is 55725107. The next prime is 55725151. The reversal of 55725120 is 2152755.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30801 + ... + 32559.

Almost surely, 2^55725120 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 55725120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104607360).

55725120 is an abundant number, since it is smaller than the sum of its proper divisors (153489600).

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

55725120 is a wasteful number, since it uses less digits than its factorization.

55725120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793 (or 1780 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55725120 is about 7464.9259875768. The cubic root of 55725120 is about 381.9592255667.

Adding to 55725120 its reverse (2152755), we get a palindrome (57877875).

The spelling of 55725120 in words is "fifty-five million, seven hundred twenty-five thousand, one hundred twenty".