954637561 has 2 divisors, whose sum is σ = 954637562. Its totient is φ = 954637560.

The previous prime is 954637559. The next prime is 954637583. The reversal of 954637561 is 165736459.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 952895161 + 1742400 = 30869^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 954637561 - 2¹ = 954637559 is a prime.

It is a super-2 number, since 2×954637561² = 1822665745744057442, which contains 22 as substring.

Together with 954637559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (954637511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477318780 + 477318781.

It is an arithmetic number, because the mean of its divisors is an integer number (477318781).

Almost surely, 2^954637561 is an apocalyptic number.

It is an amenable number.

954637561 is a deficient number, since it is larger than the sum of its proper divisors (1).

954637561 is an equidigital number, since it uses as much as digits as its factorization.

954637561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The square root of 954637561 is about 30897.2095989266. The cubic root of 954637561 is about 984.6446057404.

The spelling of 954637561 in words is "nine hundred fifty-four million, six hundred thirty-seven thousand, five hundred sixty-one".