71222505 has 16 divisors (see below), whose sum is σ = 114416064. Its totient is φ = 37832000.

The previous prime is 71222497. The next prime is 71222519. The reversal of 71222505 is 50522217.

It is not a de Polignac number, because 71222505 - 2³ = 71222497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5694 + ... + 13223.

It is an arithmetic number, because the mean of its divisors is an integer number (7151004).

Almost surely, 2^71222505 is an apocalyptic number.

It is an amenable number.

71222505 is a deficient number, since it is larger than the sum of its proper divisors (43193559).

71222505 is a wasteful number, since it uses less digits than its factorization.

71222505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19176.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 71222505 is about 8439.3426876742. The cubic root of 71222505 is about 414.5138837958.

The spelling of 71222505 in words is "seventy-one million, two hundred twenty-two thousand, five hundred five".