Search a number
-
+
90361 = 109829
BaseRepresentation
bin10110000011111001
311120221201
4112003321
510342421
61534201
7524305
oct260371
9146851
1090361
1161987
1244361
133218b
1424d05
151bb91
hex160f9

90361 has 4 divisors (see below), whose sum is σ = 91300. Its totient is φ = 89424.

The previous prime is 90359. The next prime is 90371. The reversal of 90361 is 16309.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16309 = 47347.

It can be written as a sum of positive squares in 2 ways, for example, as 57600 + 32761 = 240^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 90361 - 21 = 90359 is a prime.

It is a super-2 number, since 2×903612 = 16330220642, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306 + ... + 523.

It is an arithmetic number, because the mean of its divisors is an integer number (22825).

290361 is an apocalyptic number.

It is an amenable number.

90361 is a deficient number, since it is larger than the sum of its proper divisors (939).

90361 is a wasteful number, since it uses less digits than its factorization.

90361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 90361 is about 300.6010645357. The cubic root of 90361 is about 44.8738855722.

The spelling of 90361 in words is "ninety thousand, three hundred sixty-one".

Divisors: 1 109 829 90361