55454994 has 48 divisors (see below), whose sum is σ = 138682752. Its totient is φ = 15686784.

The previous prime is 55454983. The next prime is 55455007. The reversal of 55454994 is 49945455.

55454994 is a `hidden beast` number, since 554 + 5 + 4 + 9 + 94 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10842 + ... + 15114.

It is an arithmetic number, because the mean of its divisors is an integer number (2889224).

Almost surely, 2^55454994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55454994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69341376).

55454994 is an abundant number, since it is smaller than the sum of its proper divisors (83227758).

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

55454994 is a wasteful number, since it uses less digits than its factorization.

55454994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391 (or 4388 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 55454994 is about 7446.8109953187. The cubic root of 55454994 is about 381.3410466420.

The spelling of 55454994 in words is "fifty-five million, four hundred fifty-four thousand, nine hundred ninety-four".