71275015 has 16 divisors (see below), whose sum is σ = 100134720. Its totient is φ = 47681280.

The previous prime is 71275013. The next prime is 71275019. The reversal of 71275015 is 51057217.

It is not a de Polignac number, because 71275015 - 2¹ = 71275013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71275013) 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, 23400 + ... + 26269.

It is an arithmetic number, because the mean of its divisors is an integer number (6258420).

Almost surely, 2^71275015 is an apocalyptic number.

71275015 is a deficient number, since it is larger than the sum of its proper divisors (28859705).

71275015 is a wasteful number, since it uses less digits than its factorization.

71275015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49722.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 71275015 is about 8442.4531387506. The cubic root of 71275015 is about 414.6157279020.

The spelling of 71275015 in words is "seventy-one million, two hundred seventy-five thousand, fifteen".