71505097 has 8 divisors (see below), whose sum is σ = 74067840. Its totient is φ = 68948880.

The previous prime is 71505089. The next prime is 71505101. The reversal of 71505097 is 79050517.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71505097 - 2³ = 71505089 is a prime.

It is a super-2 number, since 2×71505097² = 10225957793958818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71505017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34698 + ... + 36700.

It is an arithmetic number, because the mean of its divisors is an integer number (9258480).

Almost surely, 2^71505097 is an apocalyptic number.

It is an amenable number.

71505097 is a deficient number, since it is larger than the sum of its proper divisors (2562743).

71505097 is a wasteful number, since it uses less digits than its factorization.

71505097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263.

The product of its (nonzero) digits is 11025, while the sum is 34.

The square root of 71505097 is about 8456.0686492010. The cubic root of 71505097 is about 415.0613873481.

The spelling of 71505097 in words is "seventy-one million, five hundred five thousand, ninety-seven".