55749850 has 48 divisors (see below), whose sum is σ = 112492800. Its totient is φ = 20433600.

The previous prime is 55749847. The next prime is 55749853. The reversal of 55749850 is 5894755.

It is an interprime number because it is at equal distance from previous prime (55749847) and next prime (55749853).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 55749797 and 55749806.

It is not an unprimeable number, because it can be changed into a prime (55749853) 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, 129135 + ... + 129565.

It is an arithmetic number, because the mean of its divisors is an integer number (2343600).

Almost surely, 2^55749850 is an apocalyptic number.

55749850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55749850 is an abundant number, since it is smaller than the sum of its proper divisors (56742950).

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

55749850 is a wasteful number, since it uses less digits than its factorization.

55749850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 55749850 is about 7466.5822167843. The cubic root of 55749850 is about 382.0157198651.

The spelling of 55749850 in words is "fifty-five million, seven hundred forty-nine thousand, eight hundred fifty".