51972026 has 12 divisors (see below), whose sum is σ = 82814478. Its totient is φ = 24457152.

The previous prime is 51972017. The next prime is 51972073. The reversal of 51972026 is 62027915.

51972026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 51480625 + 491401 = 7175^2 + 701^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51971983 and 51972001.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 44381 + ... + 45536.

Almost surely, 2^51972026 is an apocalyptic number.

51972026 is a deficient number, since it is larger than the sum of its proper divisors (30842452).

51972026 is a wasteful number, since it uses less digits than its factorization.

51972026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89953 (or 89936 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 51972026 is about 7209.1626420826. The cubic root of 51972026 is about 373.1841720945.

The spelling of 51972026 in words is "fifty-one million, nine hundred seventy-two thousand, twenty-six".