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163009057 = 67236313
BaseRepresentation
bin10011011011101…
…01001000100001
3102100201201101111
421231311020201
5313212242212
624101503321
74016361031
oct1155651041
9370651344
10163009057
1184018132
1246711b41
1327a05283
14179138c1
15e49dea7
hex9b75221

163009057 has 6 divisors (see below), whose sum is σ = 165482898. Its totient is φ = 160571664.

The previous prime is 163009031. The next prime is 163009069. The reversal of 163009057 is 750900361.

It can be written as a sum of positive squares in only one way, i.e., 110649361 + 52359696 = 10519^2 + 7236^2 .

It is not a de Polignac number, because 163009057 - 219 = 162484769 is a prime.

It is the 12768-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163009157) by changing a digit.

It is a nontrivial repunit in base 12767.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13668 + ... + 22645.

It is an arithmetic number, because the mean of its divisors is an integer number (27580483).

Almost surely, 2163009057 is an apocalyptic number.

It is an amenable number.

163009057 is a deficient number, since it is larger than the sum of its proper divisors (2473841).

163009057 is an frugal number, since it uses more digits than its factorization.

163009057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36447 (or 36380 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 163009057 is about 12767.5000293715. The cubic root of 163009057 is about 546.2656743980.

The spelling of 163009057 in words is "one hundred sixty-three million, nine thousand, fifty-seven".

Divisors: 1 67 4489 36313 2432971 163009057