981451 has 2 divisors, whose sum is σ = 981452. Its totient is φ = 981450.

The previous prime is 981443. The next prime is 981467. The reversal of 981451 is 154189.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981451 - 2³ = 981443 is a prime.

It is not a weakly prime, because it can be changed into another prime (981481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490725 + 490726.

It is an arithmetic number, because the mean of its divisors is an integer number (490726).

2⁹⁸¹⁴⁵¹ is an apocalyptic number.

981451 is a deficient number, since it is larger than the sum of its proper divisors (1).

981451 is an equidigital number, since it uses as much as digits as its factorization.

981451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 28.

The square root of 981451 is about 990.6820882604. The cubic root of 981451 is about 99.3778371617.

The spelling of 981451 in words is "nine hundred eighty-one thousand, four hundred fifty-one".