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531428541 = 3726939397
BaseRepresentation
bin11111101011001…
…111010010111101
31101000222100220120
4133223033102331
52042021203131
6124422205153
716112032230
oct3753172275
91330870816
10531428541
11252a83146
12129b837b9
138613a377
1450817417
15319c5496
hex1facf4bd

531428541 has 16 divisors (see below), whose sum is σ = 810182784. Its totient is φ = 303528384.

The previous prime is 531428507. The next prime is 531428543. The reversal of 531428541 is 145824135.

It is not a de Polignac number, because 531428541 - 27 = 531428413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531428543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51855 + ... + 61251.

It is an arithmetic number, because the mean of its divisors is an integer number (50636424).

Almost surely, 2531428541 is an apocalyptic number.

It is an amenable number.

531428541 is a deficient number, since it is larger than the sum of its proper divisors (278754243).

531428541 is a wasteful number, since it uses less digits than its factorization.

531428541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12100.

The product of its digits is 19200, while the sum is 33.

The square root of 531428541 is about 23052.7339159589. The cubic root of 531428541 is about 809.9936701228.

The spelling of 531428541 in words is "five hundred thirty-one million, four hundred twenty-eight thousand, five hundred forty-one".

Divisors: 1 3 7 21 2693 8079 9397 18851 28191 56553 65779 197337 25306121 75918363 177142847 531428541