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53431573 = 134110121
BaseRepresentation
bin1100101111010…
…0110100010101
310201112121100011
43023310310111
5102134302243
65145120221
71216106116
oct313646425
9121477304
1053431573
1128184a28
1215a89071
13b0ba320
14714c20d
154a5689d
hex32f4d15

53431573 has 4 divisors (see below), whose sum is σ = 57541708. Its totient is φ = 49321440.

The previous prime is 53431531. The next prime is 53431597. The reversal of 53431573 is 37513435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37513435 = 57502687.

It can be written as a sum of positive squares in 2 ways, for example, as 20277009 + 33154564 = 4503^2 + 5758^2 .

It is a cyclic number.

It is not a de Polignac number, because 53431573 - 225 = 19877141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53431373) 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, 2055048 + ... + 2055073.

It is an arithmetic number, because the mean of its divisors is an integer number (14385427).

Almost surely, 253431573 is an apocalyptic number.

It is an amenable number.

53431573 is a deficient number, since it is larger than the sum of its proper divisors (4110135).

53431573 is a wasteful number, since it uses less digits than its factorization.

53431573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110134.

The product of its digits is 18900, while the sum is 31.

The square root of 53431573 is about 7309.6903491188. The cubic root of 53431573 is about 376.6453874562.

The spelling of 53431573 in words is "fifty-three million, four hundred thirty-one thousand, five hundred seventy-three".

Divisors: 1 13 4110121 53431573