5402561 has 2 divisors, whose sum is σ = 5402562. Its totient is φ = 5402560.

The previous prime is 5402543. The next prime is 5402581. The reversal of 5402561 is 1652045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3400336 + 2002225 = 1844^2 + 1415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5402561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5402521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2701280 + 2701281.

It is an arithmetic number, because the mean of its divisors is an integer number (2701281).

Almost surely, 2^5402561 is an apocalyptic number.

It is an amenable number.

5402561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5402561 is an equidigital number, since it uses as much as digits as its factorization.

5402561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 5402561 is about 2324.3409818699. The cubic root of 5402561 is about 175.4687947592.

The spelling of 5402561 in words is "five million, four hundred two thousand, five hundred sixty-one".