513154493 has 2 divisors, whose sum is σ = 513154494. Its totient is φ = 513154492.

The previous prime is 513154441. The next prime is 513154511. The reversal of 513154493 is 394451315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 492751204 + 20403289 = 22198^2 + 4517^2 .

It is a cyclic number.

It is not a de Polignac number, because 513154493 - 2²² = 508960189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513157493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256577246 + 256577247.

It is an arithmetic number, because the mean of its divisors is an integer number (256577247).

Almost surely, 2^513154493 is an apocalyptic number.

It is an amenable number.

513154493 is a deficient number, since it is larger than the sum of its proper divisors (1).

513154493 is an equidigital number, since it uses as much as digits as its factorization.

513154493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 513154493 is about 22652.9135653673. The cubic root of 513154493 is about 800.6008470530.

The spelling of 513154493 in words is "five hundred thirteen million, one hundred fifty-four thousand, four hundred ninety-three".