71256101 has 8 divisors (see below), whose sum is σ = 81503040. Its totient is φ = 61026048.

The previous prime is 71256091. The next prime is 71256109. The reversal of 71256101 is 10165217.

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 71256101 - 2²⁶ = 4147237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71256109) 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, 6725 + ... + 13701.

It is an arithmetic number, because the mean of its divisors is an integer number (10187880).

Almost surely, 2^71256101 is an apocalyptic number.

It is an amenable number.

71256101 is a deficient number, since it is larger than the sum of its proper divisors (10246939).

71256101 is a wasteful number, since it uses less digits than its factorization.

71256101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 71256101 is about 8441.3328923814. The cubic root of 71256101 is about 414.5790496183.

The spelling of 71256101 in words is "seventy-one million, two hundred fifty-six thousand, one hundred one".