279541 has 2 divisors, whose sum is σ = 279542. Its totient is φ = 279540.

The previous prime is 279523. The next prime is 279551. The reversal of 279541 is 145972.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271441 + 8100 = 521^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 279541 - 2⁷ = 279413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279511) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139770 + 139771.

It is an arithmetic number, because the mean of its divisors is an integer number (139771).

2²⁷⁹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

279541 is a deficient number, since it is larger than the sum of its proper divisors (1).

279541 is an equidigital number, since it uses as much as digits as its factorization.

279541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 28.

The square root of 279541 is about 528.7163700889. The cubic root of 279541 is about 65.3855585704.

It can be divided in two parts, 279 and 541, that added together give a triangular number (820 = T₄₀).

The spelling of 279541 in words is "two hundred seventy-nine thousand, five hundred forty-one".