5451961 has 2 divisors, whose sum is σ = 5451962. Its totient is φ = 5451960.

The previous prime is 5451959. The next prime is 5452009. The reversal of 5451961 is 1691545.

5451961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3841600 + 1610361 = 1960^2 + 1269^2 .

It is a cyclic number.

It is not a de Polignac number, because 5451961 - 2¹ = 5451959 is a prime.

Together with 5451959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5451931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2725980 + 2725981.

It is an arithmetic number, because the mean of its divisors is an integer number (2725981).

Almost surely, 2^5451961 is an apocalyptic number.

It is an amenable number.

5451961 is a deficient number, since it is larger than the sum of its proper divisors (1).

5451961 is an equidigital number, since it uses as much as digits as its factorization.

5451961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 31.

The square root of 5451961 is about 2334.9434682664. The cubic root of 5451961 is about 176.0019907660.

The spelling of 5451961 in words is "five million, four hundred fifty-one thousand, nine hundred sixty-one".