541357021 has 2 divisors, whose sum is σ = 541357022. Its totient is φ = 541357020.

The previous prime is 541357009. The next prime is 541357031. The reversal of 541357021 is 120753145.

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., 520068025 + 21288996 = 22805^2 + 4614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541357021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541357031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270678510 + 270678511.

It is an arithmetic number, because the mean of its divisors is an integer number (270678511).

Almost surely, 2^541357021 is an apocalyptic number.

It is an amenable number.

541357021 is a deficient number, since it is larger than the sum of its proper divisors (1).

541357021 is an equidigital number, since it uses as much as digits as its factorization.

541357021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 541357021 is about 23267.0801992859. The cubic root of 541357021 is about 815.0068480236.

The spelling of 541357021 in words is "five hundred forty-one million, three hundred fifty-seven thousand, twenty-one".