1652242521 has 4 divisors (see below), whose sum is σ = 2202990032. Its totient is φ = 1101495012.

The previous prime is 1652242519. The next prime is 1652242531. The reversal of 1652242521 is 1252422561.

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.

It is not a de Polignac number, because 1652242521 - 2¹ = 1652242519 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1652242531) 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, 275373751 + ... + 275373756.

It is an arithmetic number, because the mean of its divisors is an integer number (550747508).

Almost surely, 2^1652242521 is an apocalyptic number.

It is an amenable number.

1652242521 is a deficient number, since it is larger than the sum of its proper divisors (550747511).

1652242521 is an equidigital number, since it uses as much as digits as its factorization.

1652242521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550747510.

The product of its digits is 9600, while the sum is 30.

The square root of 1652242521 is about 40647.7861758792. The cubic root of 1652242521 is about 1182.2008435312.

The spelling of 1652242521 in words is "one billion, six hundred fifty-two million, two hundred forty-two thousand, five hundred twenty-one".