51765851 has 8 divisors (see below), whose sum is σ = 53469504. Its totient is φ = 50085000.

The previous prime is 51765827. The next prime is 51765853. The reversal of 51765851 is 15856715.

It is a happy number.

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 51765851 - 2¹⁰ = 51764827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51765853) 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, 1025 + ... + 10226.

It is an arithmetic number, because the mean of its divisors is an integer number (6683688).

Almost surely, 2^51765851 is an apocalyptic number.

51765851 is a deficient number, since it is larger than the sum of its proper divisors (1703653).

51765851 is a wasteful number, since it uses less digits than its factorization.

51765851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11401.

The product of its digits is 42000, while the sum is 38.

The square root of 51765851 is about 7194.8489212769. The cubic root of 51765851 is about 372.6900395108.

The spelling of 51765851 in words is "fifty-one million, seven hundred sixty-five thousand, eight hundred fifty-one".