981455 has 4 divisors (see below), whose sum is σ = 1177752. Its totient is φ = 785160.

The previous prime is 981451. The next prime is 981467. The reversal of 981455 is 554189.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 981455 - 2² = 981451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981455.

It is not an unprimeable number, because it can be changed into a prime (981451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98141 + ... + 98150.

It is an arithmetic number, because the mean of its divisors is an integer number (294438).

2⁹⁸¹⁴⁵⁵ is an apocalyptic number.

981455 is a deficient number, since it is larger than the sum of its proper divisors (196297).

981455 is a wasteful number, since it uses less digits than its factorization.

981455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196296.

The product of its digits is 7200, while the sum is 32.

The square root of 981455 is about 990.6841070695. The cubic root of 981455 is about 99.3779721696.

The spelling of 981455 in words is "nine hundred eighty-one thousand, four hundred fifty-five".