56091420 has 384 divisors, whose sum is σ = 232243200. Its totient is φ = 10886400.

The previous prime is 56091419. The next prime is 56091467. The reversal of 56091420 is 2419065.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 789985 + ... + 790055.

It is an arithmetic number, because the mean of its divisors is an integer number (604800).

Almost surely, 2^56091420 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 56091420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116121600).

56091420 is an abundant number, since it is smaller than the sum of its proper divisors (176151780).

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

56091420 is a wasteful number, since it uses less digits than its factorization.

56091420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 56091420 is about 7489.4205383327. The cubic root of 56091420 is about 382.7943140437.

The spelling of 56091420 in words is "fifty-six million, ninety-one thousand, four hundred twenty".