1561024 has 14 divisors (see below), whose sum is σ = 3097784. Its totient is φ = 780480.

The previous prime is 1561019. The next prime is 1561037. The reversal of 1561024 is 4201651.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1560992 and 1561010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12132 + ... + 12259.

2^1561024 is an apocalyptic number.

It is an amenable number.

1561024 is a deficient number, since it is larger than the sum of its proper divisors (1536760).

1561024 is an equidigital number, since it uses as much as digits as its factorization.

1561024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24403 (or 24393 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1561024 is about 1249.4094605052. The cubic root of 1561024 is about 116.0031707417.

Adding to 1561024 its reverse (4201651), we get a palindrome (5762675).

The spelling of 1561024 in words is "one million, five hundred sixty-one thousand, twenty-four".