56742889 has 8 divisors (see below), whose sum is σ = 68663808. Its totient is φ = 45775680.

The previous prime is 56742887. The next prime is 56742899. The reversal of 56742889 is 98824765.

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

It is a cyclic number.

It is not a de Polignac number, because 56742889 - 2¹ = 56742887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56742887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238297 + ... + 238534.

It is an arithmetic number, because the mean of its divisors is an integer number (8582976).

Almost surely, 2^56742889 is an apocalyptic number.

It is an amenable number.

56742889 is a deficient number, since it is larger than the sum of its proper divisors (11920919).

56742889 is a wasteful number, since it uses less digits than its factorization.

56742889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476855.

The product of its digits is 967680, while the sum is 49.

The square root of 56742889 is about 7532.7875982268. The cubic root of 56742889 is about 384.2705906204.

The spelling of 56742889 in words is "fifty-six million, seven hundred forty-two thousand, eight hundred eighty-nine".