2545751813 has 4 divisors (see below), whose sum is σ = 2777183808. Its totient is φ = 2314319820.

The previous prime is 2545751777. The next prime is 2545751839. The reversal of 2545751813 is 3181575452.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2545751813 - 2¹² = 2545747717 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 (2545751843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115715981 + ... + 115716002.

It is an arithmetic number, because the mean of its divisors is an integer number (694295952).

Almost surely, 2^2545751813 is an apocalyptic number.

It is an amenable number.

2545751813 is a deficient number, since it is larger than the sum of its proper divisors (231431995).

2545751813 is a wasteful number, since it uses less digits than its factorization.

2545751813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231431994.

The product of its digits is 168000, while the sum is 41.

The square root of 2545751813 is about 50455.4438390943. The cubic root of 2545751813 is about 1365.4381116816.

The spelling of 2545751813 in words is "two billion, five hundred forty-five million, seven hundred fifty-one thousand, eight hundred thirteen".