902161 has 8 divisors (see below), whose sum is σ = 1005480. Its totient is φ = 803712.

The previous prime is 902141. The next prime is 902179. The reversal of 902161 is 161209.

It can be written as a sum of positive squares in 4 ways, for example, as 11025 + 891136 = 105^2 + 944^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 902161 - 2¹⁹ = 377873 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902141) 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, 820 + ... + 1573.

It is an arithmetic number, because the mean of its divisors is an integer number (125685).

2⁹⁰²¹⁶¹ is an apocalyptic number.

It is an amenable number.

902161 is a deficient number, since it is larger than the sum of its proper divisors (103319).

902161 is a wasteful number, since it uses less digits than its factorization.

902161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 902161 is about 949.8215621894. The cubic root of 902161 is about 96.6261516040.

The spelling of 902161 in words is "nine hundred two thousand, one hundred sixty-one".