513321541 has 2 divisors, whose sum is σ = 513321542. Its totient is φ = 513321540.

The previous prime is 513321533. The next prime is 513321569. The reversal of 513321541 is 145123315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508277025 + 5044516 = 22545^2 + 2246^2 .

It is a cyclic number.

It is not a de Polignac number, because 513321541 - 2³ = 513321533 is a prime.

It is a super-2 number, since 2×513321541² = 526998008909229362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513321041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256660770 + 256660771.

It is an arithmetic number, because the mean of its divisors is an integer number (256660771).

Almost surely, 2^513321541 is an apocalyptic number.

It is an amenable number.

513321541 is a deficient number, since it is larger than the sum of its proper divisors (1).

513321541 is an equidigital number, since it uses as much as digits as its factorization.

513321541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 25.

The square root of 513321541 is about 22656.6003848768. The cubic root of 513321541 is about 800.6877112513.

Adding to 513321541 its reverse (145123315), we get a palindrome (658444856).

The spelling of 513321541 in words is "five hundred thirteen million, three hundred twenty-one thousand, five hundred forty-one".