2547615961 has 8 divisors (see below), whose sum is σ = 2779601184. Its totient is φ = 2315694720.

The previous prime is 2547615947. The next prime is 2547615989. The reversal of 2547615961 is 1695167452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2547615961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2547615911) 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, 111465 + ... + 132361.

It is an arithmetic number, because the mean of its divisors is an integer number (347450148).

Almost surely, 2^2547615961 is an apocalyptic number.

It is an amenable number.

2547615961 is a deficient number, since it is larger than the sum of its proper divisors (231985223).

2547615961 is a wasteful number, since it uses less digits than its factorization.

2547615961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31991.

The product of its digits is 453600, while the sum is 46.

The square root of 2547615961 is about 50473.9136683495. The cubic root of 2547615961 is about 1365.7713148469.

The spelling of 2547615961 in words is "two billion, five hundred forty-seven million, six hundred fifteen thousand, nine hundred sixty-one".