51793661 has 8 divisors (see below), whose sum is σ = 52276224. Its totient is φ = 51313680.

The previous prime is 51793649. The next prime is 51793669. The reversal of 51793661 is 16639715.

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 51793661 - 2⁶ = 51793597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51793669) 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, 70880 + ... + 71606.

It is an arithmetic number, because the mean of its divisors is an integer number (6534528).

Almost surely, 2^51793661 is an apocalyptic number.

It is an amenable number.

51793661 is a deficient number, since it is larger than the sum of its proper divisors (482563).

51793661 is a wasteful number, since it uses less digits than its factorization.

51793661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291.

The product of its digits is 34020, while the sum is 38.

The square root of 51793661 is about 7196.7812944399. The cubic root of 51793661 is about 372.7567672494.

The spelling of 51793661 in words is "fifty-one million, seven hundred ninety-three thousand, six hundred sixty-one".