51889366 has 4 divisors (see below), whose sum is σ = 77834052. Its totient is φ = 25944682.

The previous prime is 51889351. The next prime is 51889367. The reversal of 51889366 is 66398815.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51889367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12972340 + ... + 12972343.

It is an arithmetic number, because the mean of its divisors is an integer number (19458513).

Almost surely, 2^51889366 is an apocalyptic number.

51889366 is a deficient number, since it is larger than the sum of its proper divisors (25944686).

51889366 is a wasteful number, since it uses less digits than its factorization.

51889366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25944685.

The product of its digits is 311040, while the sum is 46.

The square root of 51889366 is about 7203.4273786858. The cubic root of 51889366 is about 372.9862209114.

The spelling of 51889366 in words is "fifty-one million, eight hundred eighty-nine thousand, three hundred sixty-six".