2561127146 has 32 divisors (see below), whose sum is σ = 4122722448. Its totient is φ = 1189027840.

The previous prime is 2561127143. The next prime is 2561127187. The reversal of 2561127146 is 6417211652.

It can be written as a sum of positive squares in 8 ways, for example, as 541074121 + 2020053025 = 23261^2 + 44945^2 .

It is not an unprimeable number, because it can be changed into a prime (2561127143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 893756 + ... + 896616.

Almost surely, 2^2561127146 is an apocalyptic number.

2561127146 is a deficient number, since it is larger than the sum of its proper divisors (1561595302).

2561127146 is a wasteful number, since it uses less digits than its factorization.

2561127146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226.

The product of its digits is 20160, while the sum is 35.

The square root of 2561127146 is about 50607.5799263312. The cubic root of 2561127146 is about 1368.1814979399.

Adding to 2561127146 its reverse (6417211652), we get a palindrome (8978338798).

The spelling of 2561127146 in words is "two billion, five hundred sixty-one million, one hundred twenty-seven thousand, one hundred forty-six".