1024345561 has 4 divisors (see below), whose sum is σ = 1033918992. Its totient is φ = 1014772132.

The previous prime is 1024345529. The next prime is 1024345577. The reversal of 1024345561 is 1655434201.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1024345561 - 2⁵ = 1024345529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1024345061) 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, 4786555 + ... + 4786768.

It is an arithmetic number, because the mean of its divisors is an integer number (258479748).

Almost surely, 2^1024345561 is an apocalyptic number.

It is an amenable number.

1024345561 is a deficient number, since it is larger than the sum of its proper divisors (9573431).

1024345561 is an equidigital number, since it uses as much as digits as its factorization.

1024345561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9573430.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1024345561 is about 32005.3989351797. The cubic root of 1024345561 is about 1008.0502072629.

Adding to 1024345561 its reverse (1655434201), we get a palindrome (2679779762).

The spelling of 1024345561 in words is "one billion, twenty-four million, three hundred forty-five thousand, five hundred sixty-one".