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53430231 = 348736571
BaseRepresentation
bin1100101111010…
…0011111010111
310201112112111110
43023310133113
5102134231411
65145110103
71216102161
oct313643727
9121475443
1053430231
1128183a18
1215a88333
13b0b982a
14714b931
154a562a6
hex32f47d7

53430231 has 8 divisors (see below), whose sum is σ = 71388544. Its totient is φ = 35546040.

The previous prime is 53430229. The next prime is 53430241. The reversal of 53430231 is 13203435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53430231 - 21 = 53430229 is a prime.

It is a super-2 number, since 2×534302312 = 5709579169426722, 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 = 53430198 and 53430207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53430241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16825 + ... + 19746.

It is an arithmetic number, because the mean of its divisors is an integer number (8923568).

Almost surely, 253430231 is an apocalyptic number.

53430231 is a deficient number, since it is larger than the sum of its proper divisors (17958313).

53430231 is a wasteful number, since it uses less digits than its factorization.

53430231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37061.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 53430231 is about 7309.5985525882. The cubic root of 53430231 is about 376.6422341250.

Adding to 53430231 its reverse (13203435), we get a palindrome (66633666).

The spelling of 53430231 in words is "fifty-three million, four hundred thirty thousand, two hundred thirty-one".

Divisors: 1 3 487 1461 36571 109713 17810077 53430231