901501 has 2 divisors, whose sum is σ = 901502. Its totient is φ = 901500.

The previous prime is 901499. The next prime is 901513. The reversal of 901501 is 105109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900601 + 900 = 949^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 901501 - 2¹ = 901499 is a prime.

Together with 901499, 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 (901591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450750 + 450751.

It is an arithmetic number, because the mean of its divisors is an integer number (450751).

2⁹⁰¹⁵⁰¹ is an apocalyptic number.

901501 is the 601-st centered pentagonal number.

It is an amenable number.

901501 is a deficient number, since it is larger than the sum of its proper divisors (1).

901501 is an equidigital number, since it uses as much as digits as its factorization.

901501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 901501 is about 949.4740649433. The cubic root of 901501 is about 96.6025827074.

The spelling of 901501 in words is "nine hundred one thousand, five hundred one".