55454250 has 32 divisors (see below), whose sum is σ = 138415680. Its totient is φ = 14787600.

The previous prime is 55454239. The next prime is 55454251. The reversal of 55454250 is 5245455.

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

It is not an unprimeable number, because it can be changed into a prime (55454251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36220 + ... + 37719.

It is an arithmetic number, because the mean of its divisors is an integer number (4325490).

Almost surely, 2^55454250 is an apocalyptic number.

55454250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55454250 is an abundant number, since it is smaller than the sum of its proper divisors (82961430).

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

55454250 is a wasteful number, since it uses less digits than its factorization.

55454250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73959 (or 73949 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 55454250 is about 7446.7610408821. The cubic root of 55454250 is about 381.3393412410.

The spelling of 55454250 in words is "fifty-five million, four hundred fifty-four thousand, two hundred fifty".