981051 has 4 divisors (see below), whose sum is σ = 1308072. Its totient is φ = 654032.

The previous prime is 981049. The next prime is 981061. The reversal of 981051 is 150189.

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

It is a cyclic number.

It is not a de Polignac number, because 981051 - 2¹ = 981049 is a prime.

It is a super-2 number, since 2×981051² = 1924922129202, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (981011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163506 + ... + 163511.

It is an arithmetic number, because the mean of its divisors is an integer number (327018).

2⁹⁸¹⁰⁵¹ is an apocalyptic number.

981051 is a deficient number, since it is larger than the sum of its proper divisors (327021).

981051 is a wasteful number, since it uses less digits than its factorization.

981051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327020.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 981051 is about 990.4801865762. The cubic root of 981051 is about 99.3643345225.

The spelling of 981051 in words is "nine hundred eighty-one thousand, fifty-one".