981541 has 4 divisors (see below), whose sum is σ = 1070784. Its totient is φ = 892300.

The previous prime is 981527. The next prime is 981569. The reversal of 981541 is 145189.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 981541 - 2¹⁹ = 457253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981241) 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, 44605 + ... + 44626.

It is an arithmetic number, because the mean of its divisors is an integer number (267696).

2⁹⁸¹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

981541 is a deficient number, since it is larger than the sum of its proper divisors (89243).

981541 is a wasteful number, since it uses less digits than its factorization.

981541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89242.

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

The square root of 981541 is about 990.7275104689. The cubic root of 981541 is about 99.3808747499.

The spelling of 981541 in words is "nine hundred eighty-one thousand, five hundred forty-one".