55825400 has 24 divisors (see below), whose sum is σ = 129794520. Its totient is φ = 22330080.

The previous prime is 55825397. The next prime is 55825403. The reversal of 55825400 is 452855.

It is an interprime number because it is at equal distance from previous prime (55825397) and next prime (55825403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55825403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139364 + ... + 139763.

It is an arithmetic number, because the mean of its divisors is an integer number (5408105).

Almost surely, 2^55825400 is an apocalyptic number.

55825400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55825400 is an abundant number, since it is smaller than the sum of its proper divisors (73969120).

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

55825400 is a wasteful number, since it uses less digits than its factorization.

55825400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279143 (or 279134 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 55825400 is about 7471.6397129412. The cubic root of 55825400 is about 382.1882061900.

The spelling of 55825400 in words is "fifty-five million, eight hundred twenty-five thousand, four hundred".