538921541 has 2 divisors, whose sum is σ = 538921542. Its totient is φ = 538921540.

The previous prime is 538921531. The next prime is 538921583. The reversal of 538921541 is 145129835.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 533841025 + 5080516 = 23105^2 + 2254^2 .

It is a cyclic number.

It is not a de Polignac number, because 538921541 - 2⁶ = 538921477 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 538921495 and 538921504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538921511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269460770 + 269460771.

It is an arithmetic number, because the mean of its divisors is an integer number (269460771).

Almost surely, 2^538921541 is an apocalyptic number.

It is an amenable number.

538921541 is a deficient number, since it is larger than the sum of its proper divisors (1).

538921541 is an equidigital number, since it uses as much as digits as its factorization.

538921541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 38.

The square root of 538921541 is about 23214.6837368076. The cubic root of 538921541 is about 813.7828147783.

The spelling of 538921541 in words is "five hundred thirty-eight million, nine hundred twenty-one thousand, five hundred forty-one".