71959001 has 4 divisors (see below), whose sum is σ = 73316772. Its totient is φ = 70601232.

The previous prime is 71958961. The next prime is 71959003. The reversal of 71959001 is 10095917.

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 20693401 + 51265600 = 4549^2 + 7160^2 .

It is a cyclic number.

It is not a de Polignac number, because 71959001 - 2¹⁴ = 71942617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71959003) 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, 678806 + ... + 678911.

It is an arithmetic number, because the mean of its divisors is an integer number (18329193).

Almost surely, 2^71959001 is an apocalyptic number.

It is an amenable number.

71959001 is a deficient number, since it is larger than the sum of its proper divisors (1357771).

71959001 is a wasteful number, since it uses less digits than its factorization.

71959001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357770.

The product of its (nonzero) digits is 2835, while the sum is 32.

The square root of 71959001 is about 8482.8651409768. The cubic root of 71959001 is about 415.9377853983.

The spelling of 71959001 in words is "seventy-one million, nine hundred fifty-nine thousand, one".