56445999 has 4 divisors (see below), whose sum is σ = 75261336. Its totient is φ = 37630664.

The previous prime is 56445997. The next prime is 56446003. The reversal of 56445999 is 99954465.

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

It is a cyclic number.

It is not a de Polignac number, because 56445999 - 2¹ = 56445997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56445997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9407664 + ... + 9407669.

It is an arithmetic number, because the mean of its divisors is an integer number (18815334).

Almost surely, 2^56445999 is an apocalyptic number.

56445999 is a deficient number, since it is larger than the sum of its proper divisors (18815337).

56445999 is a wasteful number, since it uses less digits than its factorization.

56445999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18815336.

The product of its digits is 1749600, while the sum is 51.

The square root of 56445999 is about 7513.0552373851. The cubic root of 56445999 is about 383.5992251464.

The spelling of 56445999 in words is "fifty-six million, four hundred forty-five thousand, nine hundred ninety-nine".