900043541 has 2 divisors, whose sum is σ = 900043542. Its totient is φ = 900043540.

The previous prime is 900043519. The next prime is 900043559. The reversal of 900043541 is 145340009.

900043541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 859721041 + 40322500 = 29321^2 + 6350^2 .

It is an emirp because it is prime and its reverse (145340009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 900043541 - 2¹⁸ = 899781397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 900043541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900043511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450021770 + 450021771.

It is an arithmetic number, because the mean of its divisors is an integer number (450021771).

Almost surely, 2^900043541 is an apocalyptic number.

It is an amenable number.

900043541 is a deficient number, since it is larger than the sum of its proper divisors (1).

900043541 is an equidigital number, since it uses as much as digits as its factorization.

900043541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 900043541 is about 30000.7256745566. The cubic root of 900043541 is about 965.5049541224.

The spelling of 900043541 in words is "nine hundred million, forty-three thousand, five hundred forty-one".