1021047541 has 2 divisors, whose sum is σ = 1021047542. Its totient is φ = 1021047540.

The previous prime is 1021047539. The next prime is 1021047571. The reversal of 1021047541 is 1457401201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855796516 + 165251025 = 29254^2 + 12855^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021047541 - 2¹ = 1021047539 is a prime.

Together with 1021047539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021047571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510523770 + 510523771.

It is an arithmetic number, because the mean of its divisors is an integer number (510523771).

Almost surely, 2^1021047541 is an apocalyptic number.

It is an amenable number.

1021047541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021047541 is an equidigital number, since it uses as much as digits as its factorization.

1021047541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1021047541 is about 31953.8345273302. The cubic root of 1021047541 is about 1006.9671924954.

Adding to 1021047541 its reverse (1457401201), we get a palindrome (2478448742).

The spelling of 1021047541 in words is "one billion, twenty-one million, forty-seven thousand, five hundred forty-one".