2797457881 has 9 divisors (see below), whose sum is σ = 2821946911. Its totient is φ = 2773180912.

The previous prime is 2797457863. The next prime is 2797457891. The reversal of 2797457881 is 1887547972.

The square root of 2797457881 is 52891.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 568107225 + 2229350656 = 23835^2 + 47216^2 .

It is not a de Polignac number, because 2797457881 - 2¹⁷ = 2797326809 is a prime.

It is a super-2 number, since 2×2797457881² = 15651541191938020322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2797457821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12006141 + ... + 12006373.

Almost surely, 2^2797457881 is an apocalyptic number.

2797457881 is the 52891-st square number.

2797457881 is the 26446-th centered octagonal number.

It is an amenable number.

2797457881 is a deficient number, since it is larger than the sum of its proper divisors (24489030).

2797457881 is an frugal number, since it uses more digits than its factorization.

2797457881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920 (or 460 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 58.

The cubic root of 2797457881 is about 1409.0330679264.

Subtracting from 2797457881 its reverse (1887547972), we obtain a palindrome (909909909).

The spelling of 2797457881 in words is "two billion, seven hundred ninety-seven million, four hundred fifty-seven thousand, eight hundred eighty-one".