1561035141 has 12 divisors (see below), whose sum is σ = 2258638668. Its totient is φ = 1038931584.

The previous prime is 1561035137. The next prime is 1561035197. The reversal of 1561035141 is 1415301651.

1561035141 is a `hidden beast` number, since 1 + 5 + 610 + 3 + 5 + 1 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 724148100 + 836887041 = 26910^2 + 28929^2 .

It is not a de Polignac number, because 1561035141 - 2² = 1561035137 is a prime.

It is a super-2 number, since 2×1561035141² = 4873661422873779762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561035941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140910 + ... + 151583.

It is an arithmetic number, because the mean of its divisors is an integer number (188219889).

Almost surely, 2^1561035141 is an apocalyptic number.

It is an amenable number.

1561035141 is a deficient number, since it is larger than the sum of its proper divisors (697603527).

1561035141 is a wasteful number, since it uses less digits than its factorization.

1561035141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293092 (or 293089 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1561035141 is about 39509.9372436859. The cubic root of 1561035141 is about 1160.0344671190.

Adding to 1561035141 its reverse (1415301651), we get a palindrome (2976336792).

The spelling of 1561035141 in words is "one billion, five hundred sixty-one million, thirty-five thousand, one hundred forty-one".