51812153 has 2 divisors, whose sum is σ = 51812154. Its totient is φ = 51812152.

The previous prime is 51812149. The next prime is 51812161. The reversal of 51812153 is 35121815.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50865424 + 946729 = 7132^2 + 973^2 .

It is a cyclic number.

It is not a de Polignac number, because 51812153 - 2² = 51812149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51812113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25906076 + 25906077.

It is an arithmetic number, because the mean of its divisors is an integer number (25906077).

Almost surely, 2^51812153 is an apocalyptic number.

It is an amenable number.

51812153 is a deficient number, since it is larger than the sum of its proper divisors (1).

51812153 is an equidigital number, since it uses as much as digits as its factorization.

51812153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 26.

The square root of 51812153 is about 7198.0659207873. The cubic root of 51812153 is about 372.8011240157.

Adding to 51812153 its reverse (35121815), we get a palindrome (86933968).

The spelling of 51812153 in words is "fifty-one million, eight hundred twelve thousand, one hundred fifty-three".