901010549 has 2 divisors, whose sum is σ = 901010550. Its totient is φ = 901010548.

The previous prime is 901010543. The next prime is 901010587. The reversal of 901010549 is 945010109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 849314449 + 51696100 = 29143^2 + 7190^2 .

It is a cyclic number.

It is not a de Polignac number, because 901010549 - 2⁸ = 901010293 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (901010543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450505274 + 450505275.

It is an arithmetic number, because the mean of its divisors is an integer number (450505275).

Almost surely, 2^901010549 is an apocalyptic number.

It is an amenable number.

901010549 is a deficient number, since it is larger than the sum of its proper divisors (1).

901010549 is an equidigital number, since it uses as much as digits as its factorization.

901010549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 901010549 is about 30016.8377581650. The cubic root of 901010549 is about 965.8506103045.

The spelling of 901010549 in words is "nine hundred one million, ten thousand, five hundred forty-nine".