51552437 has 2 divisors, whose sum is σ = 51552438. Its totient is φ = 51552436.

The previous prime is 51552421. The next prime is 51552439. The reversal of 51552437 is 73425515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40436881 + 11115556 = 6359^2 + 3334^2 .

It is a cyclic number.

It is not a de Polignac number, because 51552437 - 2⁴ = 51552421 is a prime.

Together with 51552439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51552439) 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, 25776218 + 25776219.

It is an arithmetic number, because the mean of its divisors is an integer number (25776219).

Almost surely, 2^51552437 is an apocalyptic number.

It is an amenable number.

51552437 is a deficient number, since it is larger than the sum of its proper divisors (1).

51552437 is an equidigital number, since it uses as much as digits as its factorization.

51552437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21000, while the sum is 32.

The square root of 51552437 is about 7180.0025766012. The cubic root of 51552437 is about 372.1771735718.

The spelling of 51552437 in words is "fifty-one million, five hundred fifty-two thousand, four hundred thirty-seven".