56420330 has 8 divisors (see below), whose sum is σ = 101556612. Its totient is φ = 22568128.

The previous prime is 56420327. The next prime is 56420339. The reversal of 56420330 is 3302465.

It can be written as a sum of positive squares in 2 ways, for example, as 51079609 + 5340721 = 7147^2 + 2311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56420296 and 56420305.

It is not an unprimeable number, because it can be changed into a prime (56420339) by changing a digit.

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, 2821007 + ... + 2821026.

Almost surely, 2^56420330 is an apocalyptic number.

56420330 is a deficient number, since it is larger than the sum of its proper divisors (45136282).

56420330 is a wasteful number, since it uses less digits than its factorization.

56420330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5642040.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 56420330 is about 7511.3467500842. The cubic root of 56420330 is about 383.5410686685.

Adding to 56420330 its reverse (3302465), we get a palindrome (59722795).

The spelling of 56420330 in words is "fifty-six million, four hundred twenty thousand, three hundred thirty".