2550272981 has 4 divisors (see below), whose sum is σ = 2558421132. Its totient is φ = 2542124832.

The previous prime is 2550272971. The next prime is 2550273007. The reversal of 2550272981 is 1892720552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1072562500 + 1477710481 = 32750^2 + 38441^2 .

It is a cyclic number.

It is not a de Polignac number, because 2550272981 - 2⁶ = 2550272917 is a prime.

It is a super-2 number, since 2×2550272981² = 13007784555237252722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550272911) 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, 4073606 + ... + 4074231.

It is an arithmetic number, because the mean of its divisors is an integer number (639605283).

Almost surely, 2^2550272981 is an apocalyptic number.

It is an amenable number.

2550272981 is a deficient number, since it is larger than the sum of its proper divisors (8148151).

2550272981 is an equidigital number, since it uses as much as digits as its factorization.

2550272981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8148150.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 2550272981 is about 50500.2275341409. The cubic root of 2550272981 is about 1366.2459574031.

The spelling of 2550272981 in words is "two billion, five hundred fifty million, two hundred seventy-two thousand, nine hundred eighty-one".