Search a number
-
+
30454161 = 310151387
BaseRepresentation
bin111010000101…
…1000110010001
32010022020020220
41310023012101
530244013121
63004423253
7516566433
oct164130621
963266226
1030454161
1116210731
12a247b29
13640391a
14408a653
152a186c6
hex1d0b191

30454161 has 4 divisors (see below), whose sum is σ = 40605552. Its totient is φ = 20302772.

The previous prime is 30454159. The next prime is 30454187. The reversal of 30454161 is 16145403.

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 30454161 - 21 = 30454159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30458161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5075691 + ... + 5075696.

It is an arithmetic number, because the mean of its divisors is an integer number (10151388).

Almost surely, 230454161 is an apocalyptic number.

It is an amenable number.

30454161 is a deficient number, since it is larger than the sum of its proper divisors (10151391).

30454161 is a wasteful number, since it uses less digits than its factorization.

30454161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10151390.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 30454161 is about 5518.5288800549. The cubic root of 30454161 is about 312.2833860990.

Adding to 30454161 its reverse (16145403), we get a palindrome (46599564).

It can be divided in two parts, 30454 and 161, that multiplied together give a palindrome (4903094).

The spelling of 30454161 in words is "thirty million, four hundred fifty-four thousand, one hundred sixty-one".

Divisors: 1 3 10151387 30454161