55673280 has 168 divisors, whose sum is σ = 206361792. Its totient is φ = 13694976.

The previous prime is 55673279. The next prime is 55673309. The reversal of 55673280 is 8237655.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 36697 + ... + 38183.

It is an arithmetic number, because the mean of its divisors is an integer number (1228344).

Almost surely, 2^55673280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55673280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103180896).

55673280 is an abundant number, since it is smaller than the sum of its proper divisors (150688512).

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

55673280 is a wasteful number, since it uses less digits than its factorization.

55673280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 55673280 is about 7461.4529416193. The cubic root of 55673280 is about 381.8407457290.

The spelling of 55673280 in words is "fifty-five million, six hundred seventy-three thousand, two hundred eighty".