51980951 has 16 divisors (see below), whose sum is σ = 60510240. Its totient is φ = 44129280.

The previous prime is 51980927. The next prime is 51980953. The reversal of 51980951 is 15908915.

51980951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-51980951 is a prime.

It is a super-3 number, since 3×51980951³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51980953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24605 + ... + 26633.

It is an arithmetic number, because the mean of its divisors is an integer number (3781890).

Almost surely, 2^51980951 is an apocalyptic number.

51980951 is a deficient number, since it is larger than the sum of its proper divisors (8529289).

51980951 is a wasteful number, since it uses less digits than its factorization.

51980951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194.

The product of its (nonzero) digits is 16200, while the sum is 38.

The square root of 51980951 is about 7209.7816194390. The cubic root of 51980951 is about 373.2055328043.

Subtracting from 51980951 its reverse (15908915), we obtain a square (36072036 = 6006²).

The spelling of 51980951 in words is "fifty-one million, nine hundred eighty thousand, nine hundred fifty-one".