56481630 has 16 divisors (see below), whose sum is σ = 135555984. Its totient is φ = 15061760.

The previous prime is 56481613. The next prime is 56481637. The reversal of 56481630 is 3618465.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56481591 and 56481600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56481637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941331 + ... + 941390.

It is an arithmetic number, because the mean of its divisors is an integer number (8472249).

Almost surely, 2^56481630 is an apocalyptic number.

56481630 is an abundant number, since it is smaller than the sum of its proper divisors (79074354).

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

56481630 is a wasteful number, since it uses less digits than its factorization.

56481630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882731.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 56481630 is about 7515.4261356227. The cubic root of 56481630 is about 383.6799226231.

The spelling of 56481630 in words is "fifty-six million, four hundred eighty-one thousand, six hundred thirty".