71437601 has 2 divisors, whose sum is σ = 71437602. Its totient is φ = 71437600.

The previous prime is 71437591. The next prime is 71437631. The reversal of 71437601 is 10673417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70980625 + 456976 = 8425^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 71437601 - 2⁶ = 71437537 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 (71437631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35718800 + 35718801.

It is an arithmetic number, because the mean of its divisors is an integer number (35718801).

Almost surely, 2^71437601 is an apocalyptic number.

It is an amenable number.

71437601 is a deficient number, since it is larger than the sum of its proper divisors (1).

71437601 is an equidigital number, since it uses as much as digits as its factorization.

71437601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 71437601 is about 8452.0767270535. The cubic root of 71437601 is about 414.9307495617.

The spelling of 71437601 in words is "seventy-one million, four hundred thirty-seven thousand, six hundred one".