993541 has 2 divisors, whose sum is σ = 993542. Its totient is φ = 993540.

The previous prime is 993527. The next prime is 993557. The reversal of 993541 is 145399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772641 + 220900 = 879^2 + 470^2 .

It is an emirp because it is prime and its reverse (145399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 993541 - 2¹¹ = 991493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496770 + 496771.

It is an arithmetic number, because the mean of its divisors is an integer number (496771).

2⁹⁹³⁵⁴¹ is an apocalyptic number.

It is an amenable number.

993541 is a deficient number, since it is larger than the sum of its proper divisors (1).

993541 is an equidigital number, since it uses as much as digits as its factorization.

993541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 31.

The square root of 993541 is about 996.7652682553. The cubic root of 993541 is about 99.7842347886.

The spelling of 993541 in words is "nine hundred ninety-three thousand, five hundred forty-one".