72075522 has 16 divisors (see below), whose sum is σ = 144362880. Its totient is φ = 23989872.

The previous prime is 72075517. The next prime is 72075533. The reversal of 72075522 is 22557027.

It is a self number, because there is not a number n which added to its sum of digits gives 72075522.

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, 4218 + ... + 12725.

It is an arithmetic number, because the mean of its divisors is an integer number (9022680).

Almost surely, 2^72075522 is an apocalyptic number.

72075522 is an abundant number, since it is smaller than the sum of its proper divisors (72287358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72075522 is a wasteful number, since it uses less digits than its factorization.

72075522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17657.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 72075522 is about 8489.7303844115. The cubic root of 72075522 is about 416.1621694224.

The spelling of 72075522 in words is "seventy-two million, seventy-five thousand, five hundred twenty-two".