513215489 has 2 divisors, whose sum is σ = 513215490. Its totient is φ = 513215488.

The previous prime is 513215473. The next prime is 513215501. The reversal of 513215489 is 984512315.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510760000 + 2455489 = 22600^2 + 1567^2 .

It is a cyclic number.

It is not a de Polignac number, because 513215489 - 2⁴ = 513215473 is a prime.

It is not a weakly prime, because it can be changed into another prime (513245489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256607744 + 256607745.

It is an arithmetic number, because the mean of its divisors is an integer number (256607745).

Almost surely, 2^513215489 is an apocalyptic number.

It is an amenable number.

513215489 is a deficient number, since it is larger than the sum of its proper divisors (1).

513215489 is an equidigital number, since it uses as much as digits as its factorization.

513215489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 38.

The square root of 513215489 is about 22654.2598422460. The cubic root of 513215489 is about 800.6325668796.

The spelling of 513215489 in words is "five hundred thirteen million, two hundred fifteen thousand, four hundred eighty-nine".