51694028 has 6 divisors (see below), whose sum is σ = 90464556. Its totient is φ = 25847012.

The previous prime is 51694021. The next prime is 51694033. The reversal of 51694028 is 82049615.

It is not an unprimeable number, because it can be changed into a prime (51694021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6461750 + ... + 6461757.

It is an arithmetic number, because the mean of its divisors is an integer number (15077426).

Almost surely, 2^51694028 is an apocalyptic number.

It is an amenable number.

51694028 is a deficient number, since it is larger than the sum of its proper divisors (38770528).

51694028 is a wasteful number, since it uses less digits than its factorization.

51694028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12923511 (or 12923509 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 51694028 is about 7189.8559095437. The cubic root of 51694028 is about 372.5175956735.

The spelling of 51694028 in words is "fifty-one million, six hundred ninety-four thousand, twenty-eight".