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13250051 = 31427421
BaseRepresentation
bin110010100010…
…111000000011
3220221011122122
4302202320003
511343000201
61151554455
7220423613
oct62427003
926834578
1013250051
11752aa61
12452ba2b
13298bc89
141a8ca43
15126ae1b
hexca2e03

13250051 has 4 divisors (see below), whose sum is σ = 13677504. Its totient is φ = 12822600.

The previous prime is 13250009. The next prime is 13250101. The reversal of 13250051 is 15005231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15005231 = 19789749.

It is a cyclic number.

It is not a de Polignac number, because 13250051 - 218 = 12987907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13252051) 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, 213680 + ... + 213741.

It is an arithmetic number, because the mean of its divisors is an integer number (3419376).

Almost surely, 213250051 is an apocalyptic number.

13250051 is a deficient number, since it is larger than the sum of its proper divisors (427453).

13250051 is an equidigital number, since it uses as much as digits as its factorization.

13250051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427452.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 13250051 is about 3640.0619500223. The cubic root of 13250051 is about 236.6314781600.

Adding to 13250051 its reverse (15005231), we get a palindrome (28255282).

The spelling of 13250051 in words is "thirteen million, two hundred fifty thousand, fifty-one".

Divisors: 1 31 427421 13250051