2672556281 has 4 divisors (see below), whose sum is σ = 2829765492. Its totient is φ = 2515347072.

The previous prime is 2672556241. The next prime is 2672556301. The reversal of 2672556281 is 1826552762.

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 1677721600 + 994834681 = 40960^2 + 31541^2 .

It is a cyclic number.

It is not a de Polignac number, because 2672556281 - 2²² = 2668361977 is a prime.

It is a super-2 number, since 2×2672556281² = 14285114150225101922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2672556241) 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, 78604580 + ... + 78604613.

It is an arithmetic number, because the mean of its divisors is an integer number (707441373).

Almost surely, 2^2672556281 is an apocalyptic number.

It is an amenable number.

2672556281 is a deficient number, since it is larger than the sum of its proper divisors (157209211).

2672556281 is a wasteful number, since it uses less digits than its factorization.

2672556281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157209210.

The product of its digits is 403200, while the sum is 44.

The square root of 2672556281 is about 51696.7724427744. The cubic root of 2672556281 is about 1387.7427056530.

The spelling of 2672556281 in words is "two billion, six hundred seventy-two million, five hundred fifty-six thousand, two hundred eighty-one".