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15058081 = 137109913
BaseRepresentation
bin111001011100…
…010010100001
31001100000210201
4321130102201
512323324311
61254425201
7241664053
oct71342241
931300721
1015058081
1185553a5
125062201
133172c0c
141ddd8d3
1514c69c1
hexe5c4a1

15058081 has 4 divisors (see below), whose sum is σ = 15168132. Its totient is φ = 14948032.

The previous prime is 15058067. The next prime is 15058133. The reversal of 15058081 is 18085051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6677056 + 8381025 = 2584^2 + 2895^2 .

It is a cyclic number.

It is not a de Polignac number, because 15058081 - 215 = 15025313 is a prime.

It is a super-2 number, since 2×150580812 = 453491606805122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15058061) 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, 54820 + ... + 55093.

It is an arithmetic number, because the mean of its divisors is an integer number (3792033).

Almost surely, 215058081 is an apocalyptic number.

It is an amenable number.

15058081 is a deficient number, since it is larger than the sum of its proper divisors (110051).

15058081 is a wasteful number, since it uses less digits than its factorization.

15058081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110050.

The product of its (nonzero) digits is 1600, while the sum is 28.

The square root of 15058081 is about 3880.4743266771. The cubic root of 15058081 is about 246.9391087260.

The spelling of 15058081 in words is "fifteen million, fifty-eight thousand, eighty-one".

Divisors: 1 137 109913 15058081