2545727791 has 16 divisors (see below), whose sum is σ = 2700822528. Its totient is φ = 2394515200.

The previous prime is 2545727783. The next prime is 2545727813. The reversal of 2545727791 is 1977275452.

It is a cyclic number.

It is not a de Polignac number, because 2545727791 - 2³ = 2545727783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545727731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 702015 + ... + 705631.

It is an arithmetic number, because the mean of its divisors is an integer number (168801408).

Almost surely, 2^2545727791 is an apocalyptic number.

2545727791 is a deficient number, since it is larger than the sum of its proper divisors (155094737).

2545727791 is a wasteful number, since it uses less digits than its factorization.

2545727791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4142.

The product of its digits is 1234800, while the sum is 49.

The square root of 2545727791 is about 50455.2057869156. The cubic root of 2545727791 is about 1365.4338168590.

The spelling of 2545727791 in words is "two billion, five hundred forty-five million, seven hundred twenty-seven thousand, seven hundred ninety-one".