5404561 has 2 divisors, whose sum is σ = 5404562. Its totient is φ = 5404560.

The previous prime is 5404559. The next prime is 5404573. The reversal of 5404561 is 1654045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3763600 + 1640961 = 1940^2 + 1281^2 .

It is a cyclic number.

It is not a de Polignac number, because 5404561 - 2¹ = 5404559 is a prime.

Together with 5404559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5404501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2702280 + 2702281.

It is an arithmetic number, because the mean of its divisors is an integer number (2702281).

Almost surely, 2^5404561 is an apocalyptic number.

It is an amenable number.

5404561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5404561 is an equidigital number, since it uses as much as digits as its factorization.

5404561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 5404561 is about 2324.7711715350. The cubic root of 5404561 is about 175.4904446331.

The spelling of 5404561 in words is "five million, four hundred four thousand, five hundred sixty-one".