71449061 has 4 divisors (see below), whose sum is σ = 71526252. Its totient is φ = 71371872.

The previous prime is 71449051. The next prime is 71449067. The reversal of 71449061 is 16094417.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10764961 + 60684100 = 3281^2 + 7790^2 .

It is a cyclic number.

It is not a de Polignac number, because 71449061 - 2⁶ = 71448997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71449067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37190 + ... + 39063.

It is an arithmetic number, because the mean of its divisors is an integer number (17881563).

Almost surely, 2^71449061 is an apocalyptic number.

It is an amenable number.

71449061 is a deficient number, since it is larger than the sum of its proper divisors (77191).

71449061 is an equidigital number, since it uses as much as digits as its factorization.

71449061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77190.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 71449061 is about 8452.7546397609. The cubic root of 71449061 is about 414.9529360670.

The spelling of 71449061 in words is "seventy-one million, four hundred forty-nine thousand, sixty-one".