55531850 has 48 divisors (see below), whose sum is σ = 116349696. Its totient is φ = 19536000.

The previous prime is 55531837. The next prime is 55531859. The reversal of 55531850 is 5813555.

It is not an unprimeable number, because it can be changed into a prime (55531859) 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, 15422 + ... + 18678.

It is an arithmetic number, because the mean of its divisors is an integer number (2423952).

Almost surely, 2^55531850 is an apocalyptic number.

55531850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55531850 is an abundant number, since it is smaller than the sum of its proper divisors (60817846).

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

55531850 is a wasteful number, since it uses less digits than its factorization.

55531850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311 (or 3306 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 55531850 is about 7451.9695383167. The cubic root of 55531850 is about 381.5171342892.

The spelling of 55531850 in words is "fifty-five million, five hundred thirty-one thousand, eight hundred fifty".