1052504221 has 16 divisors (see below), whose sum is σ = 1213531200. Its totient is φ = 906087168.

The previous prime is 1052504207. The next prime is 1052504237. The reversal of 1052504221 is 1224052501.

It is a cyclic number.

It is not a de Polignac number, because 1052504221 - 2¹⁷ = 1052373149 is a prime.

It is a super-2 number, since 2×1052504221² = 2215530270445633682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1052504192 and 1052504201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052504821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46815 + ... + 65548.

It is an arithmetic number, because the mean of its divisors is an integer number (75845700).

Almost surely, 2^1052504221 is an apocalyptic number.

It is an amenable number.

1052504221 is a deficient number, since it is larger than the sum of its proper divisors (161026979).

1052504221 is a wasteful number, since it uses less digits than its factorization.

1052504221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112428.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1052504221 is about 32442.3214489962. The cubic root of 1052504221 is about 1017.2037410380.

Adding to 1052504221 its reverse (1224052501), we get a palindrome (2276556722).

The spelling of 1052504221 in words is "one billion, fifty-two million, five hundred four thousand, two hundred twenty-one".