901881 has 8 divisors (see below), whose sum is σ = 1336160. Its totient is φ = 601236.

The previous prime is 901861. The next prime is 901891. The reversal of 901881 is 188109.

It is not a de Polignac number, because 901881 - 2¹⁴ = 885497 is a prime.

It is a super-2 number, since 2×901881² = 1626778676322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 33403 = 901881 / (9 + 0 + 1 + 8 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16675 + ... + 16728.

It is an arithmetic number, because the mean of its divisors is an integer number (167020).

2⁹⁰¹⁸⁸¹ is an apocalyptic number.

It is an amenable number.

901881 is a deficient number, since it is larger than the sum of its proper divisors (434279).

901881 is a wasteful number, since it uses less digits than its factorization.

901881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33412 (or 33406 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 901881 is about 949.6741546446. The cubic root of 901881 is about 96.6161540825.

The spelling of 901881 in words is "nine hundred one thousand, eight hundred eighty-one".