56191330 has 16 divisors (see below), whose sum is σ = 108924984. Its totient is φ = 20747520.

The previous prime is 56191321. The next prime is 56191337. The reversal of 56191330 is 3319165.

56191330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 39225169 + 16966161 = 6263^2 + 4119^2 .

It is not an unprimeable number, because it can be changed into a prime (56191337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215991 + ... + 216250.

Almost surely, 2^56191330 is an apocalyptic number.

56191330 is a deficient number, since it is larger than the sum of its proper divisors (52733654).

56191330 is a wasteful number, since it uses less digits than its factorization.

56191330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432261.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 56191330 is about 7496.0876462325. The cubic root of 56191330 is about 383.0214568940.

The spelling of 56191330 in words is "fifty-six million, one hundred ninety-one thousand, three hundred thirty".