71522090 has 16 divisors (see below), whose sum is σ = 128913120. Its totient is φ = 28570320.

The previous prime is 71522089. The next prime is 71522123. The reversal of 71522090 is 9022517.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3701 + ... + 12519.

It is an arithmetic number, because the mean of its divisors is an integer number (8057070).

Almost surely, 2^71522090 is an apocalyptic number.

71522090 is a deficient number, since it is larger than the sum of its proper divisors (57391030).

71522090 is a wasteful number, since it uses less digits than its factorization.

71522090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9637.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 71522090 is about 8457.0733708535. The cubic root of 71522090 is about 415.0942641630.

The spelling of 71522090 in words is "seventy-one million, five hundred twenty-two thousand, ninety".