2552752681 has 4 divisors (see below), whose sum is σ = 2663741952. Its totient is φ = 2441763412.

The previous prime is 2552752667. The next prime is 2552752687. The reversal of 2552752681 is 1862572552.

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 2552752681 - 2²¹ = 2550655529 is a prime.

It is a super-2 number, since 2×2552752681² = 13033092500705375522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2552752687) 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, 55494601 + ... + 55494646.

It is an arithmetic number, because the mean of its divisors is an integer number (665935488).

Almost surely, 2^2552752681 is an apocalyptic number.

It is an amenable number.

2552752681 is a deficient number, since it is larger than the sum of its proper divisors (110989271).

2552752681 is a wasteful number, since it uses less digits than its factorization.

2552752681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110989270.

The product of its digits is 336000, while the sum is 43.

The square root of 2552752681 is about 50524.7729435769. The cubic root of 2552752681 is about 1366.6886267011.

The spelling of 2552752681 in words is "two billion, five hundred fifty-two million, seven hundred fifty-two thousand, six hundred eighty-one".