55925840 has 20 divisors (see below), whose sum is σ = 130027764. Its totient is φ = 22370304.

The previous prime is 55925839. The next prime is 55925851. The reversal of 55925840 is 4852955.

It can be written as a sum of positive squares in 2 ways, for example, as 40653376 + 15272464 = 6376^2 + 3908^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 55925794 and 55925803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349457 + ... + 349616.

Almost surely, 2^55925840 is an apocalyptic number.

It is an amenable number.

55925840 is an abundant number, since it is smaller than the sum of its proper divisors (74101924).

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

55925840 is a wasteful number, since it uses less digits than its factorization.

55925840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699086 (or 699080 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 55925840 is about 7478.3581085690. The cubic root of 55925840 is about 382.4172774533.

It can be divided in two parts, 55925 and 840, that added together give a palindrome (56765).

The spelling of 55925840 in words is "fifty-five million, nine hundred twenty-five thousand, eight hundred forty".