451961 has 2 divisors, whose sum is σ = 451962. Its totient is φ = 451960.

The previous prime is 451939. The next prime is 451967. The reversal of 451961 is 169154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295936 + 156025 = 544^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 451961 - 2⁶ = 451897 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 451961.

It is not a weakly prime, because it can be changed into another prime (451967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225980 + 225981.

It is an arithmetic number, because the mean of its divisors is an integer number (225981).

2⁴⁵¹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

451961 is a deficient number, since it is larger than the sum of its proper divisors (1).

451961 is an equidigital number, since it uses as much as digits as its factorization.

451961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 26.

The square root of 451961 is about 672.2804474325. The cubic root of 451961 is about 76.7420954770.

The spelling of 451961 in words is "four hundred fifty-one thousand, nine hundred sixty-one".