2561527 has 2 divisors, whose sum is σ = 2561528. Its totient is φ = 2561526.

The previous prime is 2561521. The next prime is 2561549. The reversal of 2561527 is 7251652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2561527 is a prime.

It is a super-2 number, since 2×2561527² = 13122841143458, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2561495 and 2561504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2561521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280763 + 1280764.

It is an arithmetic number, because the mean of its divisors is an integer number (1280764).

2^2561527 is an apocalyptic number.

2561527 is a deficient number, since it is larger than the sum of its proper divisors (1).

2561527 is an equidigital number, since it uses as much as digits as its factorization.

2561527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 28.

The square root of 2561527 is about 1600.4771163625. The cubic root of 2561527 is about 136.8252696328.

The spelling of 2561527 in words is "two million, five hundred sixty-one thousand, five hundred twenty-seven".