2992551961 has 12 divisors (see below), whose sum is σ = 3485773668. Its totient is φ = 2561624352.

The previous prime is 2992551953. The next prime is 2992551983. The reversal of 2992551961 is 1691552992.

2992551961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1052678025 + 1939873936 = 32445^2 + 44044^2 .

It is not a de Polignac number, because 2992551961 - 2³ = 2992551953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2992551061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3246 + ... + 77431.

It is an arithmetic number, because the mean of its divisors is an integer number (290481139).

Almost surely, 2^2992551961 is an apocalyptic number.

It is an amenable number.

2992551961 is a deficient number, since it is larger than the sum of its proper divisors (493221707).

2992551961 is an equidigital number, since it uses as much as digits as its factorization.

2992551961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81448 (or 81441 counting only the distinct ones).

The product of its digits is 437400, while the sum is 49.

The square root of 2992551961 is about 54704.2225152684. Note that the first 3 decimals coincide. The cubic root of 2992551961 is about 1441.0550333163.

The spelling of 2992551961 in words is "two billion, nine hundred ninety-two million, five hundred fifty-one thousand, nine hundred sixty-one".