51353851 has 4 divisors (see below), whose sum is σ = 51368472. Its totient is φ = 51339232.

The previous prime is 51353833. The next prime is 51353881. The reversal of 51353851 is 15835315.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51353851 - 2²¹ = 49256699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51353831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491 + ... + 10243.

It is an arithmetic number, because the mean of its divisors is an integer number (12842118).

Almost surely, 2^51353851 is an apocalyptic number.

51353851 is a deficient number, since it is larger than the sum of its proper divisors (14621).

51353851 is an equidigital number, since it uses as much as digits as its factorization.

51353851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14620.

The product of its digits is 9000, while the sum is 31.

The square root of 51353851 is about 7166.1601293859. The cubic root of 51353851 is about 371.6986686657.

The spelling of 51353851 in words is "fifty-one million, three hundred fifty-three thousand, eight hundred fifty-one".