54416561 has 2 divisors, whose sum is σ = 54416562. Its totient is φ = 54416560.

The previous prime is 54416539. The next prime is 54416567. The reversal of 54416561 is 16561445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37442161 + 16974400 = 6119^2 + 4120^2 .

It is a cyclic number.

It is not a de Polignac number, because 54416561 - 2¹⁸ = 54154417 is a prime.

It is a super-2 number, since 2×54416561² = 5922324222133442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54416567) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27208280 + 27208281.

It is an arithmetic number, because the mean of its divisors is an integer number (27208281).

Almost surely, 2^54416561 is an apocalyptic number.

It is an amenable number.

54416561 is a deficient number, since it is larger than the sum of its proper divisors (1).

54416561 is an equidigital number, since it uses as much as digits as its factorization.

54416561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

The square root of 54416561 is about 7376.7581633127. The cubic root of 54416561 is about 378.9457412411.

The spelling of 54416561 in words is "fifty-four million, four hundred sixteen thousand, five hundred sixty-one".