2561514727 has 4 divisors (see below), whose sum is σ = 2563303680. Its totient is φ = 2559725776.

The previous prime is 2561514713. The next prime is 2561514733. The reversal of 2561514727 is 7274151652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2561514727 is a prime.

It is a super-2 number, since 2×2561514727² = 13122715393275769058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2561514727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561514737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892327 + ... + 895192.

It is an arithmetic number, because the mean of its divisors is an integer number (640825920).

Almost surely, 2^2561514727 is an apocalyptic number.

2561514727 is a deficient number, since it is larger than the sum of its proper divisors (1788953).

2561514727 is a wasteful number, since it uses less digits than its factorization.

2561514727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788952.

The product of its digits is 117600, while the sum is 40.

The square root of 2561514727 is about 50611.4090596182. The cubic root of 2561514727 is about 1368.2505110964.

The spelling of 2561514727 in words is "two billion, five hundred sixty-one million, five hundred fourteen thousand, seven hundred twenty-seven".