9021572 has 48 divisors (see below), whose sum is σ = 18923520. Its totient is φ = 3683232.

The previous prime is 9021569. The next prime is 9021601. The reversal of 9021572 is 2751209.

It is a super-5 number, since 5×9021572⁵ (a number of 36 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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, 70973 + ... + 71099.

It is an arithmetic number, because the mean of its divisors is an integer number (394240).

Almost surely, 2^9021572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9021572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9461760).

9021572 is an abundant number, since it is smaller than the sum of its proper divisors (9901948).

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

9021572 is a wasteful number, since it uses less digits than its factorization.

9021572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 238 counting only the distinct ones).

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

The square root of 9021572 is about 3003.5931815078. The cubic root of 9021572 is about 208.1744406947.

The spelling of 9021572 in words is "nine million, twenty-one thousand, five hundred seventy-two".