56490330 has 32 divisors (see below), whose sum is σ = 146006784. Its totient is φ = 13905216.

The previous prime is 56490307. The next prime is 56490349. The reversal of 56490330 is 3309465.

It is a happy number.

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

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 72034 + ... + 72813.

It is an arithmetic number, because the mean of its divisors is an integer number (4562712).

Almost surely, 2^56490330 is an apocalyptic number.

56490330 is an abundant number, since it is smaller than the sum of its proper divisors (89516454).

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

56490330 is a wasteful number, since it uses less digits than its factorization.

56490330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144870.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 56490330 is about 7516.0049228297. The cubic root of 56490330 is about 383.6996213225.

Adding to 56490330 its reverse (3309465), we get a palindrome (59799795).

The spelling of 56490330 in words is "fifty-six million, four hundred ninety thousand, three hundred thirty".