51508851 has 16 divisors (see below), whose sum is σ = 70391808. Its totient is φ = 33488000.

The previous prime is 51508823. The next prime is 51508871. The reversal of 51508851 is 15880515.

It is a cyclic number.

It is not a de Polignac number, because 51508851 - 2⁵ = 51508819 is a prime.

It is a super-3 number, since 3×51508851³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51508811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56086 + ... + 56996.

It is an arithmetic number, because the mean of its divisors is an integer number (4399488).

Almost surely, 2^51508851 is an apocalyptic number.

51508851 is a deficient number, since it is larger than the sum of its proper divisors (18882957).

51508851 is a wasteful number, since it uses less digits than its factorization.

51508851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362.

The product of its (nonzero) digits is 8000, while the sum is 33.

The square root of 51508851 is about 7176.9666991007. The cubic root of 51508851 is about 372.0722558800.

The spelling of 51508851 in words is "fifty-one million, five hundred eight thousand, eight hundred fifty-one".