55285450 has 24 divisors (see below), whose sum is σ = 112180320. Its totient is φ = 20103600.

The previous prime is 55285381. The next prime is 55285457. The reversal of 55285450 is 5458255.

It is not an unprimeable number, because it can be changed into a prime (55285457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49710 + ... + 50809.

It is an arithmetic number, because the mean of its divisors is an integer number (4674180).

Almost surely, 2^55285450 is an apocalyptic number.

55285450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55285450 is an abundant number, since it is smaller than the sum of its proper divisors (56894870).

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

55285450 is a wasteful number, since it uses less digits than its factorization.

55285450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100542 (or 100537 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The square root of 55285450 is about 7435.4186163255. The cubic root of 55285450 is about 380.9520219367.

The spelling of 55285450 in words is "fifty-five million, two hundred eighty-five thousand, four hundred fifty".