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222501 = 374167
BaseRepresentation
bin110110010100100101
3102022012210
4312110211
524110001
64434033
71614456
oct662445
9368183
10222501
11142194
12a8919
137a376
145b12d
1545dd6
hex36525

222501 has 4 divisors (see below), whose sum is σ = 296672. Its totient is φ = 148332.

The previous prime is 222499. The next prime is 222511. The reversal of 222501 is 105222.

222501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 222501 - 21 = 222499 is a prime.

It is a D-number.

It is a Duffinian number.

222501 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222511) 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, 37081 + ... + 37086.

It is an arithmetic number, because the mean of its divisors is an integer number (74168).

2222501 is an apocalyptic number.

It is an amenable number.

222501 is a deficient number, since it is larger than the sum of its proper divisors (74171).

222501 is an equidigital number, since it uses as much as digits as its factorization.

222501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74170.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 222501 is about 471.7001165995. The cubic root of 222501 is about 60.5960044856.

Adding to 222501 its reverse (105222), we get a palindrome (327723).

The spelling of 222501 in words is "two hundred twenty-two thousand, five hundred one".

Divisors: 1 3 74167 222501