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232055161 = 1317850397
BaseRepresentation
bin11011101010011…
…10000101111001
3121011122121211121
431311032011321
5433401231121
635005425241
75515302442
oct1565160571
9534577747
10232055161
11109a97528
126586b221
13390cb860
1422b682c9
151558c141
hexdd4e179

232055161 has 4 divisors (see below), whose sum is σ = 249905572. Its totient is φ = 214204752.

The previous prime is 232055149. The next prime is 232055171. The reversal of 232055161 is 161550232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9120400 + 222934761 = 3020^2 + 14931^2 .

It is a cyclic number.

It is not a de Polignac number, because 232055161 - 29 = 232054649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232055171) 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, 8925186 + ... + 8925211.

It is an arithmetic number, because the mean of its divisors is an integer number (62476393).

Almost surely, 2232055161 is an apocalyptic number.

It is an amenable number.

232055161 is a deficient number, since it is larger than the sum of its proper divisors (17850411).

232055161 is a wasteful number, since it uses less digits than its factorization.

232055161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17850410.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 232055161 is about 15233.3568526441. The cubic root of 232055161 is about 614.5120601483.

The spelling of 232055161 in words is "two hundred thirty-two million, fifty-five thousand, one hundred sixty-one".

Divisors: 1 13 17850397 232055161