56213420 has 12 divisors (see below), whose sum is σ = 118048224. Its totient is φ = 22485360.

The previous prime is 56213411. The next prime is 56213467. The reversal of 56213420 is 2431265.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1405316 + ... + 1405355.

It is an arithmetic number, because the mean of its divisors is an integer number (9837352).

Almost surely, 2^56213420 is an apocalyptic number.

It is an amenable number.

56213420 is an abundant number, since it is smaller than the sum of its proper divisors (61834804).

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

56213420 is a wasteful number, since it uses less digits than its factorization.

56213420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810680 (or 2810678 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 56213420 is about 7497.5609367314. The cubic root of 56213420 is about 383.0716415963.

Adding to 56213420 its reverse (2431265), we get a palindrome (58644685).

The spelling of 56213420 in words is "fifty-six million, two hundred thirteen thousand, four hundred twenty".