55922250 has 64 divisors (see below), whose sum is σ = 140714496. Its totient is φ = 14792000.

The previous prime is 55922249. The next prime is 55922297. The reversal of 55922250 is 5222955.

55922250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129535 + ... + 129965.

It is an arithmetic number, because the mean of its divisors is an integer number (2198664).

Almost surely, 2^55922250 is an apocalyptic number.

55922250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55922250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70357248).

55922250 is an abundant number, since it is smaller than the sum of its proper divisors (84792246).

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

55922250 is a wasteful number, since it uses less digits than its factorization.

55922250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 55922250 is about 7478.1180787682. The cubic root of 55922250 is about 382.4090945489.

The spelling of 55922250 in words is "fifty-five million, nine hundred twenty-two thousand, two hundred fifty".