51532241 has 2 divisors, whose sum is σ = 51532242. Its totient is φ = 51532240.

The previous prime is 51532211. The next prime is 51532279. The reversal of 51532241 is 14223515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36048016 + 15484225 = 6004^2 + 3935^2 .

It is a cyclic number.

It is not a de Polignac number, because 51532241 - 2⁶ = 51532177 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51532211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25766120 + 25766121.

It is an arithmetic number, because the mean of its divisors is an integer number (25766121).

Almost surely, 2^51532241 is an apocalyptic number.

It is an amenable number.

51532241 is a deficient number, since it is larger than the sum of its proper divisors (1).

51532241 is an equidigital number, since it uses as much as digits as its factorization.

51532241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 51532241 is about 7178.5960326515. The cubic root of 51532241 is about 372.1285662870.

Adding to 51532241 its reverse (14223515), we get a palindrome (65755756).

The spelling of 51532241 in words is "fifty-one million, five hundred thirty-two thousand, two hundred forty-one".