969554561 has 2 divisors, whose sum is σ = 969554562. Its totient is φ = 969554560.

The previous prime is 969554533. The next prime is 969554567. The reversal of 969554561 is 165455969.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 843553936 + 126000625 = 29044^2 + 11225^2 .

It is a cyclic number.

It is not a de Polignac number, because 969554561 - 2²² = 965360257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (969554567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484777280 + 484777281.

It is an arithmetic number, because the mean of its divisors is an integer number (484777281).

Almost surely, 2^969554561 is an apocalyptic number.

It is an amenable number.

969554561 is a deficient number, since it is larger than the sum of its proper divisors (1).

969554561 is an equidigital number, since it uses as much as digits as its factorization.

969554561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458000, while the sum is 50.

The square root of 969554561 is about 31137.6710914609. The cubic root of 969554561 is about 989.7467505133.

The spelling of 969554561 in words is "nine hundred sixty-nine million, five hundred fifty-four thousand, five hundred sixty-one".