1052585621 has 4 divisors (see below), whose sum is σ = 1061900652. Its totient is φ = 1043270592.

The previous prime is 1052585603. The next prime is 1052585623. The reversal of 1052585621 is 1265852501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1265852501 = 491 ⋅2578111.

It can be written as a sum of positive squares in 2 ways, for example, as 8584900 + 1044000721 = 2930^2 + 32311^2 .

It is a cyclic number.

It is not a de Polignac number, because 1052585621 - 2⁶ = 1052585557 is a prime.

It is a super-2 number, since 2×1052585621² = 2215872979071911282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052585623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4657346 + ... + 4657571.

It is an arithmetic number, because the mean of its divisors is an integer number (265475163).

Almost surely, 2^1052585621 is an apocalyptic number.

It is an amenable number.

1052585621 is a deficient number, since it is larger than the sum of its proper divisors (9315031).

1052585621 is an equidigital number, since it uses as much as digits as its factorization.

1052585621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315030.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 1052585621 is about 32443.5759588859. The cubic root of 1052585621 is about 1017.2299636565.

The spelling of 1052585621 in words is "one billion, fifty-two million, five hundred eighty-five thousand, six hundred twenty-one".