2540646527 has 2 divisors, whose sum is σ = 2540646528. Its totient is φ = 2540646526.

The previous prime is 2540646487. The next prime is 2540646593. The reversal of 2540646527 is 7256460452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2540646527 - 2²⁴ = 2523869311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540646727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270323263 + 1270323264.

It is an arithmetic number, because the mean of its divisors is an integer number (1270323264).

Almost surely, 2^2540646527 is an apocalyptic number.

2540646527 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540646527 is an equidigital number, since it uses as much as digits as its factorization.

2540646527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 41.

The square root of 2540646527 is about 50404.8264256509. The cubic root of 2540646527 is about 1364.5247446729.

The spelling of 2540646527 in words is "two billion, five hundred forty million, six hundred forty-six thousand, five hundred twenty-seven".