2021525224 has 8 divisors (see below), whose sum is σ = 3790359810. Its totient is φ = 1010762608.

The previous prime is 2021525179. The next prime is 2021525239. The reversal of 2021525224 is 4225251202.

It can be written as a sum of positive squares in only one way, i.e., 1110089124 + 911436100 = 33318^2 + 30190^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126345319 + ... + 126345334.

Almost surely, 2^2021525224 is an apocalyptic number.

It is an amenable number.

2021525224 is a deficient number, since it is larger than the sum of its proper divisors (1768834586).

2021525224 is a wasteful number, since it uses less digits than its factorization.

2021525224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252690659 (or 252690655 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2021525224 is about 44961.3748010445. The cubic root of 2021525224 is about 1264.4249442474.

Adding to 2021525224 its reverse (4225251202), we get a palindrome (6246776426).

The spelling of 2021525224 in words is "two billion, twenty-one million, five hundred twenty-five thousand, two hundred twenty-four".