1052471521 has 4 divisors (see below), whose sum is σ = 1052574912. Its totient is φ = 1052368132.

The previous prime is 1052471507. The next prime is 1052471527. The reversal of 1052471521 is 1251742501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1052471521 - 2²³ = 1044082913 is a prime.

It is a super-2 number, since 2×1052471521² = 2215392605032106882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1052471521.

It is not an unprimeable number, because it can be changed into a prime (1052471527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34525 + ... + 57418.

It is an arithmetic number, because the mean of its divisors is an integer number (263143728).

Almost surely, 2^1052471521 is an apocalyptic number.

It is an amenable number.

1052471521 is a deficient number, since it is larger than the sum of its proper divisors (103391).

1052471521 is an equidigital number, since it uses as much as digits as its factorization.

1052471521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103390.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 1052471521 is about 32441.8174737483. The cubic root of 1052471521 is about 1017.1932065096.

The spelling of 1052471521 in words is "one billion, fifty-two million, four hundred seventy-one thousand, five hundred twenty-one".