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1521142013 is a prime number
BaseRepresentation
bin101101010101010…
…1100100011111101
310221000022000120002
41122222230203331
511103403021023
6410535204045
752460331236
oct13252544375
93830260502
101521142013
11710710566
12365516625
131b31b5441
1410604808d
158d823b28
hex5aaac8fd

1521142013 has 2 divisors, whose sum is σ = 1521142014. Its totient is φ = 1521142012.

The previous prime is 1521142009. The next prime is 1521142019. The reversal of 1521142013 is 3102411251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1392931684 + 128210329 = 37322^2 + 11323^2 .

It is a cyclic number.

It is not a de Polignac number, because 1521142013 - 22 = 1521142009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1521142019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760571006 + 760571007.

It is an arithmetic number, because the mean of its divisors is an integer number (760571007).

Almost surely, 21521142013 is an apocalyptic number.

It is an amenable number.

1521142013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521142013 is an equidigital number, since it uses as much as digits as its factorization.

1521142013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1521142013 is about 39001.8206369908. The cubic root of 1521142013 is about 1150.0672961249.

Adding to 1521142013 its reverse (3102411251), we get a palindrome (4623553264).

The spelling of 1521142013 in words is "one billion, five hundred twenty-one million, one hundred forty-two thousand, thirteen".