51970433 has 4 divisors (see below), whose sum is σ = 52042068. Its totient is φ = 51898800.

The previous prime is 51970333. The next prime is 51970439. The reversal of 51970433 is 33407915.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50452609 + 1517824 = 7103^2 + 1232^2 .

It is a cyclic number.

It is not a de Polignac number, because 51970433 - 2¹² = 51966337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51970433.

It is not an unprimeable number, because it can be changed into a prime (51970439) 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, 34718 + ... + 36183.

It is an arithmetic number, because the mean of its divisors is an integer number (13010517).

Almost surely, 2^51970433 is an apocalyptic number.

It is an amenable number.

51970433 is a deficient number, since it is larger than the sum of its proper divisors (71635).

51970433 is an equidigital number, since it uses as much as digits as its factorization.

51970433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71634.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 51970433 is about 7209.0521568373. The cubic root of 51970433 is about 373.1803592198.

The spelling of 51970433 in words is "fifty-one million, nine hundred seventy thousand, four hundred thirty-three".