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53512479 = 3231191801
BaseRepresentation
bin1100110000100…
…0100100011111
310201200201022200
43030020210133
5102144344404
65150542543
71216564026
oct314104437
9121621280
1053512479
112822a799
1215b07a53
13b1180b7
14716d8bd
154a70839
hex330891f

53512479 has 12 divisors (see below), whose sum is σ = 79789632. Its totient is φ = 34524000.

The previous prime is 53512441. The next prime is 53512523. The reversal of 53512479 is 97421535.

It is not a de Polignac number, because 53512479 - 28 = 53512223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53512409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95622 + ... + 96179.

It is an arithmetic number, because the mean of its divisors is an integer number (6649136).

Almost surely, 253512479 is an apocalyptic number.

53512479 is a deficient number, since it is larger than the sum of its proper divisors (26277153).

53512479 is a wasteful number, since it uses less digits than its factorization.

53512479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191838 (or 191835 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 53512479 is about 7315.2224163042. Note that the first 3 decimals coincide. The cubic root of 53512479 is about 376.8353968600.

The spelling of 53512479 in words is "fifty-three million, five hundred twelve thousand, four hundred seventy-nine".

Divisors: 1 3 9 31 93 279 191801 575403 1726209 5945831 17837493 53512479