2875506781 has 4 divisors (see below), whose sum is σ = 3286293472. Its totient is φ = 2464720092.

The previous prime is 2875506749. The next prime is 2875506827. The reversal of 2875506781 is 1876055782.

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 2875506781 - 2⁵ = 2875506749 is a prime.

It is a super-2 number, since 2×2875506781² = 16537078495153963922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2875506181) 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, 205393335 + ... + 205393348.

It is an arithmetic number, because the mean of its divisors is an integer number (821573368).

Almost surely, 2^2875506781 is an apocalyptic number.

It is an amenable number.

2875506781 is a deficient number, since it is larger than the sum of its proper divisors (410786691).

2875506781 is an equidigital number, since it uses as much as digits as its factorization.

2875506781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410786690.

The product of its (nonzero) digits is 940800, while the sum is 49.

The square root of 2875506781 is about 53623.7520227744. The cubic root of 2875506781 is about 1422.0170338723.

The spelling of 2875506781 in words is "two billion, eight hundred seventy-five million, five hundred six thousand, seven hundred eighty-one".