55494380 has 12 divisors (see below), whose sum is σ = 116538240. Its totient is φ = 22197744.

The previous prime is 55494359. The next prime is 55494391. The reversal of 55494380 is 8349455.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387340 + ... + 1387379.

It is an arithmetic number, because the mean of its divisors is an integer number (9711520).

Almost surely, 2^55494380 is an apocalyptic number.

It is an amenable number.

55494380 is an abundant number, since it is smaller than the sum of its proper divisors (61043860).

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

55494380 is a wasteful number, since it uses less digits than its factorization.

55494380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774728 (or 2774726 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 55494380 is about 7449.4550136235. The cubic root of 55494380 is about 381.4313056851.

The spelling of 55494380 in words is "fifty-five million, four hundred ninety-four thousand, three hundred eighty".