71222499 has 12 divisors (see below), whose sum is σ = 104621400. Its totient is φ = 46676544.

The previous prime is 71222497. The next prime is 71222519. The reversal of 71222499 is 99422217.

It is not a de Polignac number, because 71222499 - 2¹ = 71222497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71222497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66534 + ... + 67595.

It is an arithmetic number, because the mean of its divisors is an integer number (8718450).

Almost surely, 2^71222499 is an apocalyptic number.

71222499 is a deficient number, since it is larger than the sum of its proper divisors (33398901).

71222499 is a wasteful number, since it uses less digits than its factorization.

71222499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134194 (or 134191 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 71222499 is about 8439.3423321963. The cubic root of 71222499 is about 414.5138721559.

The spelling of 71222499 in words is "seventy-one million, two hundred twenty-two thousand, four hundred ninety-nine".