1561652 has 6 divisors (see below), whose sum is σ = 2732898. Its totient is φ = 780824.

The previous prime is 1561639. The next prime is 1561657. The reversal of 1561652 is 2561651.

1561652 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 1196836 + 364816 = 1094^2 + 604^2 .

It is an Ulam number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195203 + ... + 195210.

It is an arithmetic number, because the mean of its divisors is an integer number (455483).

2^1561652 is an apocalyptic number.

It is an amenable number.

1561652 is a deficient number, since it is larger than the sum of its proper divisors (1171246).

1561652 is a wasteful number, since it uses less digits than its factorization.

1561652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390417 (or 390415 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 1561652 is about 1249.6607539649. The cubic root of 1561652 is about 116.0187246824.

Subtracting 1561652 from its reverse (2561651), we obtain a palindrome (999999).

The spelling of 1561652 in words is "one million, five hundred sixty-one thousand, six hundred fifty-two".