4154561 has 2 divisors, whose sum is σ = 4154562. Its totient is φ = 4154560.

The previous prime is 4154543. The next prime is 4154581. The reversal of 4154561 is 1654514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3041536 + 1113025 = 1744^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 4154561 - 2⁶ = 4154497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4154561.

It is not a weakly prime, because it can be changed into another prime (4154581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077280 + 2077281.

It is an arithmetic number, because the mean of its divisors is an integer number (2077281).

Almost surely, 2^4154561 is an apocalyptic number.

It is an amenable number.

4154561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4154561 is an equidigital number, since it uses as much as digits as its factorization.

4154561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 26.

The square root of 4154561 is about 2038.2740247572. The cubic root of 4154561 is about 160.7589076990.

The spelling of 4154561 in words is "four million, one hundred fifty-four thousand, five hundred sixty-one".