2542549961 has 8 divisors (see below), whose sum is σ = 3058706880. Its totient is φ = 2064626928.

The previous prime is 2542549951. The next prime is 2542549963. The reversal of 2542549961 is 1699452452.

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

It is not a de Polignac number, because 2542549961 - 2¹⁸ = 2542287817 is a prime.

It is a super-2 number, since 2×2542549961² = 12929120608362203042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2542549963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9558326 + ... + 9558591.

It is an arithmetic number, because the mean of its divisors is an integer number (382338360).

Almost surely, 2^2542549961 is an apocalyptic number.

It is an amenable number.

2542549961 is a deficient number, since it is larger than the sum of its proper divisors (516156919).

2542549961 is a wasteful number, since it uses less digits than its factorization.

2542549961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19116943.

The product of its digits is 777600, while the sum is 47.

The square root of 2542549961 is about 50423.7043561855. The cubic root of 2542549961 is about 1364.8654236317.

The spelling of 2542549961 in words is "two billion, five hundred forty-two million, five hundred forty-nine thousand, nine hundred sixty-one".