71794521 has 24 divisors (see below), whose sum is σ = 111496320. Its totient is φ = 44374176.

The previous prime is 71794501. The next prime is 71794531. The reversal of 71794521 is 12549717.

It is a happy number.

It is not a de Polignac number, because 71794521 - 2²³ = 63405913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71794501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3571 + ... + 12503.

It is an arithmetic number, because the mean of its divisors is an integer number (4645680).

Almost surely, 2^71794521 is an apocalyptic number.

It is an amenable number.

71794521 is a deficient number, since it is larger than the sum of its proper divisors (39701799).

71794521 is a wasteful number, since it uses less digits than its factorization.

71794521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9005 (or 9002 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 71794521 is about 8473.1647570433. The cubic root of 71794521 is about 415.6206342542.

The spelling of 71794521 in words is "seventy-one million, seven hundred ninety-four thousand, five hundred twenty-one".