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239052157 = 947252431
BaseRepresentation
bin11100011111110…
…10010101111101
3121122211002220121
432033322111331
5442144132112
635415414541
75631624031
oct1617722575
9548732817
10239052157
11112a36473
1268084451
133a6ab5a6
1423a6a1c1
1515ec0407
hexe3fa57d

239052157 has 4 divisors (see below), whose sum is σ = 239305536. Its totient is φ = 238798780.

The previous prime is 239052139. The next prime is 239052193. The reversal of 239052157 is 751250932.

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 a cyclic number.

It is not a de Polignac number, because 239052157 - 27 = 239052029 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 (239052127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125269 + ... + 127162.

It is an arithmetic number, because the mean of its divisors is an integer number (59826384).

Almost surely, 2239052157 is an apocalyptic number.

It is an amenable number.

239052157 is a deficient number, since it is larger than the sum of its proper divisors (253379).

239052157 is an equidigital number, since it uses as much as digits as its factorization.

239052157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253378.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 239052157 is about 15461.3116196525. The cubic root of 239052157 is about 620.6273194484.

It can be divided in two parts, 23905 and 2157, that added together give a palindrome (26062).

The spelling of 239052157 in words is "two hundred thirty-nine million, fifty-two thousand, one hundred fifty-seven".

Divisors: 1 947 252431 239052157