12561754 has 4 divisors (see below), whose sum is σ = 18842634. Its totient is φ = 6280876.

The previous prime is 12561751. The next prime is 12561799. The reversal of 12561754 is 45716521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 6135529 = 2535^2 + 2477^2 .

It is not an unprimeable number, because it can be changed into a prime (12561751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3140437 + ... + 3140440.

Almost surely, 2^12561754 is an apocalyptic number.

12561754 is a deficient number, since it is larger than the sum of its proper divisors (6280880).

12561754 is an equidigital number, since it uses as much as digits as its factorization.

12561754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6280879.

The product of its digits is 8400, while the sum is 31.

The square root of 12561754 is about 3544.2564805612. The cubic root of 12561754 is about 232.4609962706.

The spelling of 12561754 in words is "twelve million, five hundred sixty-one thousand, seven hundred fifty-four".