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520531141 = 13257155801
BaseRepresentation
bin11111000001101…
…010110011000101
31100021110201111011
4133001222303011
52031223444031
6123352442221
715620304334
oct3701526305
91307421434
10520531141
1124790a829
121263a9371
1383ac31c0
144d1bbd1b
1530a716b1
hex1f06acc5

520531141 has 8 divisors (see below), whose sum is σ = 562756824. Its totient is φ = 478617600.

The previous prime is 520531129. The next prime is 520531171. The reversal of 520531141 is 141135025.

Adding to 520531141 its reverse (141135025), we get a palindrome (661666166).

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 50552100 + 469979041 = 7110^2 + 21679^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-520531141 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 (520531111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74560 + ... + 81241.

It is an arithmetic number, because the mean of its divisors is an integer number (70344603).

Almost surely, 2520531141 is an apocalyptic number.

It is an amenable number.

520531141 is a deficient number, since it is larger than the sum of its proper divisors (42225683).

520531141 is a wasteful number, since it uses less digits than its factorization.

520531141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156071.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 520531141 is about 22815.1515664481. The cubic root of 520531141 is about 804.4188498721.

The spelling of 520531141 in words is "five hundred twenty million, five hundred thirty-one thousand, one hundred forty-one".