51893779 has 8 divisors (see below), whose sum is σ = 59352320. Its totient is φ = 44446536.

The previous prime is 51893753. The next prime is 51893791. The reversal of 51893779 is 97739815.

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 51893779 - 2¹⁹ = 51369491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51893719) 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, 12802 + ... + 16360.

It is an arithmetic number, because the mean of its divisors is an integer number (7419040).

Almost surely, 2^51893779 is an apocalyptic number.

51893779 is a deficient number, since it is larger than the sum of its proper divisors (7458541).

51893779 is a wasteful number, since it uses less digits than its factorization.

51893779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5649.

The product of its digits is 476280, while the sum is 49.

The square root of 51893779 is about 7203.7336846943. The cubic root of 51893779 is about 372.9967943144.

The spelling of 51893779 in words is "fifty-one million, eight hundred ninety-three thousand, seven hundred seventy-nine".