55434720 has 96 divisors (see below), whose sum is σ = 190512000. Its totient is φ = 13437440.

The previous prime is 55434719. The next prime is 55434733. The reversal of 55434720 is 2743455.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31 + ... + 10529.

It is an arithmetic number, because the mean of its divisors is an integer number (1984500).

Almost surely, 2^55434720 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 55434720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95256000).

55434720 is an abundant number, since it is smaller than the sum of its proper divisors (135077280).

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

55434720 is a wasteful number, since it uses less digits than its factorization.

55434720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10528 (or 10520 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 55434720 is about 7445.4496170480. The cubic root of 55434720 is about 381.2945690080.

The spelling of 55434720 in words is "fifty-five million, four hundred thirty-four thousand, seven hundred twenty".