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252291 = 3136469
BaseRepresentation
bin111101100110000011
3110211002010
4331212003
531033131
65224003
72100354
oct754603
9424063
10252291
11162606
12102003
138aab0
1467d2b
154eb46
hex3d983

252291 has 8 divisors (see below), whose sum is σ = 362320. Its totient is φ = 155232.

The previous prime is 252289. The next prime is 252293. The reversal of 252291 is 192252.

It is an interprime number because it is at equal distance from previous prime (252289) and next prime (252293).

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

It is not a de Polignac number, because 252291 - 21 = 252289 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252293) 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, 3196 + ... + 3273.

It is an arithmetic number, because the mean of its divisors is an integer number (45290).

2252291 is an apocalyptic number.

252291 is a deficient number, since it is larger than the sum of its proper divisors (110029).

252291 is a wasteful number, since it uses less digits than its factorization.

252291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485.

The product of its digits is 360, while the sum is 21.

The square root of 252291 is about 502.2857752316. The cubic root of 252291 is about 63.1878995955.

It can be divided in two parts, 25 and 2291, that multiplied together give a palindrome (57275).

The spelling of 252291 in words is "two hundred fifty-two thousand, two hundred ninety-one".

Divisors: 1 3 13 39 6469 19407 84097 252291