51447437 has 2 divisors, whose sum is σ = 51447438. Its totient is φ = 51447436.

The previous prime is 51447391. The next prime is 51447443. The reversal of 51447437 is 73474415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48246916 + 3200521 = 6946^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 51447437 - 2⁶ = 51447373 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51447397 and 51447406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51447037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25723718 + 25723719.

It is an arithmetic number, because the mean of its divisors is an integer number (25723719).

Almost surely, 2^51447437 is an apocalyptic number.

It is an amenable number.

51447437 is a deficient number, since it is larger than the sum of its proper divisors (1).

51447437 is an equidigital number, since it uses as much as digits as its factorization.

51447437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 35.

The square root of 51447437 is about 7172.6868745262. The cubic root of 51447437 is about 371.9243231614.

The spelling of 51447437 in words is "fifty-one million, four hundred forty-seven thousand, four hundred thirty-seven".