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10522147 = 73144139
BaseRepresentation
bin101000001000…
…111000100011
3201210120200011
4220020320203
510143202042
61013305351
7155302546
oct50107043
921716604
1010522147
115a37499
123635257
13224542c
14157c85d
15dcca17
hexa08e23

10522147 has 4 divisors (see below), whose sum is σ = 10666360. Its totient is φ = 10377936.

The previous prime is 10522123. The next prime is 10522153. The reversal of 10522147 is 74122501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74122501 = 175942139.

It is a cyclic number.

It is not a de Polignac number, because 10522147 - 215 = 10489379 is a prime.

It is a super-2 number, since 2×105221472 = 221431154979218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10526147) 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, 71997 + ... + 72142.

It is an arithmetic number, because the mean of its divisors is an integer number (2666590).

Almost surely, 210522147 is an apocalyptic number.

10522147 is a deficient number, since it is larger than the sum of its proper divisors (144213).

10522147 is an equidigital number, since it uses as much as digits as its factorization.

10522147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144212.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 10522147 is about 3243.7859053889. The cubic root of 10522147 is about 219.1298063535.

Adding to 10522147 its reverse (74122501), we get a palindrome (84644648).

The spelling of 10522147 in words is "ten million, five hundred twenty-two thousand, one hundred forty-seven".

Divisors: 1 73 144139 10522147