65037481 has 2 divisors, whose sum is σ = 65037482. Its totient is φ = 65037480.

The previous prime is 65037449. The next prime is 65037487. The reversal of 65037481 is 18473056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64947481 + 90000 = 8059^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 65037481 - 2⁵ = 65037449 is a prime.

It is a super-2 number, since 2×65037481² = 8459747869650722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65037487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32518740 + 32518741.

It is an arithmetic number, because the mean of its divisors is an integer number (32518741).

Almost surely, 2^65037481 is an apocalyptic number.

It is an amenable number.

65037481 is a deficient number, since it is larger than the sum of its proper divisors (1).

65037481 is an equidigital number, since it uses as much as digits as its factorization.

65037481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 65037481 is about 8064.5818862480. The cubic root of 65037481 is about 402.1498434821.

The spelling of 65037481 in words is "sixty-five million, thirty-seven thousand, four hundred eighty-one".