71752971 has 16 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 44884608.

The previous prime is 71752951. The next prime is 71752981. The reversal of 71752971 is 17925717.

It is not a de Polignac number, because 71752971 - 2⁶ = 71752907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71752921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16350 + ... + 20268.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^71752971 is an apocalyptic number.

71752971 is a deficient number, since it is larger than the sum of its proper divisors (29853429).

71752971 is a wasteful number, since it uses less digits than its factorization.

71752971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4298.

The product of its digits is 30870, while the sum is 39.

The square root of 71752971 is about 8470.7125438183. The cubic root of 71752971 is about 415.5404407167.

The spelling of 71752971 in words is "seventy-one million, seven hundred fifty-two thousand, nine hundred seventy-one".