Search a number
-
+
57155000161 = 7172320882353
BaseRepresentation
bin110101001110101101…
…000001011101100001
312110112020012211122211
4311032231001131201
51414023140001121
642131234002121
74062232325350
oct651655013541
9173466184584
1057155000161
112226a564626
12b0b1116341
13550b20572c
142aa2ab7997
151747ac9ce1
hexd4eb41761

57155000161 has 16 divisors (see below), whose sum is σ = 72169415424. Its totient is φ = 44103527424.

The previous prime is 57155000129. The next prime is 57155000197. The reversal of 57155000161 is 16100055175.

57155000161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 57155000161 - 25 = 57155000129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57155009161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10438440 + ... + 10443913.

It is an arithmetic number, because the mean of its divisors is an integer number (4510588464).

Almost surely, 257155000161 is an apocalyptic number.

It is an amenable number.

57155000161 is a deficient number, since it is larger than the sum of its proper divisors (15014415263).

57155000161 is a wasteful number, since it uses less digits than its factorization.

57155000161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20882400.

The product of its (nonzero) digits is 5250, while the sum is 31.

The spelling of 57155000161 in words is "fifty-seven billion, one hundred fifty-five million, one hundred sixty-one", and thus it is an aban number.

Divisors: 1 7 17 23 119 161 391 2737 20882353 146176471 355000001 480294119 2485000007 3362058833 8165000023 57155000161