51650889 has 4 divisors (see below), whose sum is σ = 68867856. Its totient is φ = 34433924.

The previous prime is 51650843. The next prime is 51650917. The reversal of 51650889 is 98805615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51650889 - 2⁷ = 51650761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51650889.

It is not an unprimeable number, because it can be changed into a prime (51650089) 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, 8608479 + ... + 8608484.

It is an arithmetic number, because the mean of its divisors is an integer number (17216964).

Almost surely, 2^51650889 is an apocalyptic number.

It is an amenable number.

51650889 is a deficient number, since it is larger than the sum of its proper divisors (17216967).

51650889 is a wasteful number, since it uses less digits than its factorization.

51650889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17216966.

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 51650889 is about 7186.8552928245. The cubic root of 51650889 is about 372.4139440562.

The spelling of 51650889 in words is "fifty-one million, six hundred fifty thousand, eight hundred eighty-nine".