51972011 has 16 divisors (see below), whose sum is σ = 67334400. Its totient is φ = 38955168.

The previous prime is 51971981. The next prime is 51972017. The reversal of 51972011 is 11027915.

51972011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51972011 - 2²² = 47777707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51972017) 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, 13301 + ... + 16758.

It is an arithmetic number, because the mean of its divisors is an integer number (4208400).

Almost surely, 2^51972011 is an apocalyptic number.

51972011 is a deficient number, since it is larger than the sum of its proper divisors (15362389).

51972011 is a wasteful number, since it uses less digits than its factorization.

51972011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30098.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 51972011 is about 7209.1616017398. The cubic root of 51972011 is about 373.1841361920.

Adding to 51972011 its reverse (11027915), we get a palindrome (62999926).

The spelling of 51972011 in words is "fifty-one million, nine hundred seventy-two thousand, eleven".