901001291 has 2 divisors, whose sum is σ = 901001292. Its totient is φ = 901001290.

The previous prime is 901001273. The next prime is 901001323. The reversal of 901001291 is 192100109.

It is a weak prime.

It is an emirp because it is prime and its reverse (192100109) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-901001291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (901001221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450500645 + 450500646.

It is an arithmetic number, because the mean of its divisors is an integer number (450500646).

Almost surely, 2^901001291 is an apocalyptic number.

901001291 is a deficient number, since it is larger than the sum of its proper divisors (1).

901001291 is an equidigital number, since it uses as much as digits as its factorization.

901001291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 901001291 is about 30016.6835443225. The cubic root of 901001291 is about 965.8473022131.

The spelling of 901001291 in words is "nine hundred one million, one thousand, two hundred ninety-one".