2750057981 has 8 divisors (see below), whose sum is σ = 3042318528. Its totient is φ = 2464840000.

The previous prime is 2750057977. The next prime is 2750057987. The reversal of 2750057981 is 1897500572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2750057981 - 2² = 2750057977 is a prime.

It is a super-2 number, since 2×2750057981² = 15125637797723592722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2750057987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1759820 + ... + 1761381.

It is an arithmetic number, because the mean of its divisors is an integer number (380289816).

Almost surely, 2^2750057981 is an apocalyptic number.

It is an amenable number.

2750057981 is a deficient number, since it is larger than the sum of its proper divisors (292260547).

2750057981 is a wasteful number, since it uses less digits than its factorization.

2750057981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521283.

The product of its (nonzero) digits is 176400, while the sum is 44.

The square root of 2750057981 is about 52440.9952327375. The cubic root of 2750057981 is about 1401.0295116247.

The spelling of 2750057981 in words is "two billion, seven hundred fifty million, fifty-seven thousand, nine hundred eighty-one".