Search a number
-
+
7138151 = 37192923
BaseRepresentation
bin11011001110101101100111
3111102122200222
4123032231213
53311410101
6412554555
7114446636
oct33165547
914378628
107138151
114035aa9
122482a5b
13162c077
14d3b51d
1596001b
hex6ceb67

7138151 has 4 divisors (see below), whose sum is σ = 7331112. Its totient is φ = 6945192.

The previous prime is 7138123. The next prime is 7138169. The reversal of 7138151 is 1518317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1518317 = 6612297.

It is a cyclic number.

It is not a de Polignac number, because 7138151 - 214 = 7121767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7138151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138121) 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, 96425 + ... + 96498.

It is an arithmetic number, because the mean of its divisors is an integer number (1832778).

Almost surely, 27138151 is an apocalyptic number.

7138151 is a deficient number, since it is larger than the sum of its proper divisors (192961).

7138151 is a wasteful number, since it uses less digits than its factorization.

7138151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192960.

The product of its digits is 840, while the sum is 26.

The square root of 7138151 is about 2671.7318353458. The cubic root of 7138151 is about 192.5433735963.

The spelling of 7138151 in words is "seven million, one hundred thirty-eight thousand, one hundred fifty-one".

Divisors: 1 37 192923 7138151