51925894 has 4 divisors (see below), whose sum is σ = 77888844. Its totient is φ = 25962946.

The previous prime is 51925889. The next prime is 51925901. The reversal of 51925894 is 49852915.

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

It is a self number, because there is not a number n which added to its sum of digits gives 51925894.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12981472 + ... + 12981475.

It is an arithmetic number, because the mean of its divisors is an integer number (19472211).

Almost surely, 2^51925894 is an apocalyptic number.

51925894 is a deficient number, since it is larger than the sum of its proper divisors (25962950).

51925894 is a wasteful number, since it uses less digits than its factorization.

51925894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25962949.

The product of its digits is 129600, while the sum is 43.

The square root of 51925894 is about 7205.9623923526. The cubic root of 51925894 is about 373.0737227508.

The spelling of 51925894 in words is "fifty-one million, nine hundred twenty-five thousand, eight hundred ninety-four".