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53159157 = 3218132633
BaseRepresentation
bin1100101011001…
…0010011110101
310201000202122200
43022302103311
5102102043112
65135215113
71213562652
oct312622365
9121022580
1053159157
1128009297
1215977499
13b02332c
1470bac29
154a00cdc
hex32b24f5

53159157 has 12 divisors (see below), whose sum is σ = 77212044. Its totient is φ = 35242560.

The previous prime is 53159149. The next prime is 53159167. The reversal of 53159157 is 75195135.

It can be written as a sum of positive squares in 2 ways, for example, as 14333796 + 38825361 = 3786^2 + 6231^2 .

It is not a de Polignac number, because 53159157 - 23 = 53159149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53159167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14688 + ... + 17945.

It is an arithmetic number, because the mean of its divisors is an integer number (6434337).

Almost surely, 253159157 is an apocalyptic number.

It is an amenable number.

53159157 is a deficient number, since it is larger than the sum of its proper divisors (24052887).

53159157 is a wasteful number, since it uses less digits than its factorization.

53159157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32820 (or 32817 counting only the distinct ones).

The product of its digits is 23625, while the sum is 36.

The square root of 53159157 is about 7291.0326429114. The cubic root of 53159157 is about 376.0041991571.

The spelling of 53159157 in words is "fifty-three million, one hundred fifty-nine thousand, one hundred fifty-seven".

Divisors: 1 3 9 181 543 1629 32633 97899 293697 5906573 17719719 53159157