71275215 has 32 divisors (see below), whose sum is σ = 124975872. Its totient is φ = 34400000.

The previous prime is 71275201. The next prime is 71275219. The reversal of 71275215 is 51257217.

It is not a de Polignac number, because 71275215 - 2⁴ = 71275199 is a prime.

It is a super-4 number, since 4×71275215⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71275219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40555 + ... + 42275.

It is an arithmetic number, because the mean of its divisors is an integer number (3905496).

Almost surely, 2^71275215 is an apocalyptic number.

71275215 is a deficient number, since it is larger than the sum of its proper divisors (53700657).

71275215 is a wasteful number, since it uses less digits than its factorization.

71275215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991.

The product of its digits is 4900, while the sum is 30.

The square root of 71275215 is about 8442.4649836407. The cubic root of 71275215 is about 414.6161157100.

The spelling of 71275215 in words is "seventy-one million, two hundred seventy-five thousand, two hundred fifteen".