56403442 has 4 divisors (see below), whose sum is σ = 84605166. Its totient is φ = 28201720.

The previous prime is 56403427. The next prime is 56403449. The reversal of 56403442 is 24430465.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44076321 + 12327121 = 6639^2 + 3511^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56403442.

It is not an unprimeable number, because it can be changed into a prime (56403449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14100859 + ... + 14100862.

Almost surely, 2^56403442 is an apocalyptic number.

56403442 is a deficient number, since it is larger than the sum of its proper divisors (28201724).

56403442 is a wasteful number, since it uses less digits than its factorization.

56403442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28201723.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 56403442 is about 7510.2225000329. Note that the first 3 decimals coincide. The cubic root of 56403442 is about 383.5027970742.

The spelling of 56403442 in words is "fifty-six million, four hundred three thousand, four hundred forty-two".