55494450 has 192 divisors, whose sum is σ = 173024640. Its totient is φ = 12960000.

The previous prime is 55494427. The next prime is 55494503. The reversal of 55494450 is 5449455.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 549400 + ... + 549500.

It is an arithmetic number, because the mean of its divisors is an integer number (901170).

Almost surely, 2^55494450 is an apocalyptic number.

55494450 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 55494450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86512320).

55494450 is an abundant number, since it is smaller than the sum of its proper divisors (117530190).

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

55494450 is a wasteful number, since it uses less digits than its factorization.

55494450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 55494450 is about 7449.4597119523. The cubic root of 55494450 is about 381.4314660628.

It can be divided in two parts, 5549 and 4450, that added together give a palindrome (9999).

The spelling of 55494450 in words is "fifty-five million, four hundred ninety-four thousand, four hundred fifty".