1652752561 has 4 divisors (see below), whose sum is σ = 1724611392. Its totient is φ = 1580893732.

The previous prime is 1652752553. The next prime is 1652752567. The reversal of 1652752561 is 1652572561.

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 an emirpimes, since its reverse is a distinct semiprime: 1652572561 = 14243 ⋅116027.

It is a cyclic number.

It is not a de Polignac number, because 1652752561 - 2³ = 1652752553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1652752567) 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, 35929381 + ... + 35929426.

It is an arithmetic number, because the mean of its divisors is an integer number (431152848).

Almost surely, 2^1652752561 is an apocalyptic number.

It is an amenable number.

1652752561 is a deficient number, since it is larger than the sum of its proper divisors (71858831).

1652752561 is an equidigital number, since it uses as much as digits as its factorization.

1652752561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71858830.

The product of its digits is 126000, while the sum is 40.

The square root of 1652752561 is about 40654.0595881887. The cubic root of 1652752561 is about 1182.3224777498.

The spelling of 1652752561 in words is "one billion, six hundred fifty-two million, seven hundred fifty-two thousand, five hundred sixty-one".