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53471131 = 77638733
BaseRepresentation
bin1100101111111…
…0011110011011
310201121121121021
43023332132123
5102142034011
65150023311
71216332340
oct313763633
9121547537
1053471131
112820171a
1215aa7b37
13b10232c
14715c7c7
154a63471
hex32fe79b

53471131 has 4 divisors (see below), whose sum is σ = 61109872. Its totient is φ = 45832392.

The previous prime is 53471129. The next prime is 53471147. The reversal of 53471131 is 13117435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13117435 = 52623487.

It is a cyclic number.

It is not a de Polignac number, because 53471131 - 21 = 53471129 is a prime.

It is a super-2 number, since 2×534711312 = 5718323700838322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53471096 and 53471105.

It is not an unprimeable number, because it can be changed into a prime (53471161) 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, 3819360 + ... + 3819373.

It is an arithmetic number, because the mean of its divisors is an integer number (15277468).

Almost surely, 253471131 is an apocalyptic number.

53471131 is a deficient number, since it is larger than the sum of its proper divisors (7638741).

53471131 is an equidigital number, since it uses as much as digits as its factorization.

53471131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638740.

The product of its digits is 1260, while the sum is 25.

The square root of 53471131 is about 7312.3957086580. The cubic root of 53471131 is about 376.7383141785.

Adding to 53471131 its reverse (13117435), we get a palindrome (66588566).

The spelling of 53471131 in words is "fifty-three million, four hundred seventy-one thousand, one hundred thirty-one".

Divisors: 1 7 7638733 53471131