55725000 has 96 divisors (see below), whose sum is σ = 174363840. Its totient is φ = 14840000.

The previous prime is 55724993. The next prime is 55725017. The reversal of 55725000 is 52755.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 74629 + ... + 75371.

It is an arithmetic number, because the mean of its divisors is an integer number (1816290).

Almost surely, 2^55725000 is an apocalyptic number.

55725000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55725000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87181920).

55725000 is an abundant number, since it is smaller than the sum of its proper divisors (118638840).

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

55725000 is an equidigital number, since it uses as much as digits as its factorization.

55725000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 24.

The square root of 55725000 is about 7464.9179499844. The cubic root of 55725000 is about 381.9589513927.

Adding to 55725000 its reverse (52755), we get a palindrome (55777755).

The spelling of 55725000 in words is "fifty-five million, seven hundred twenty-five thousand".