513121545 has 24 divisors (see below), whose sum is σ = 890113536. Its totient is φ = 273448608.

The previous prime is 513121463. The next prime is 513121547. The reversal of 513121545 is 545121315.

It is not a de Polignac number, because 513121545 - 2¹⁴ = 513105161 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (513121547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64792 + ... + 72278.

It is an arithmetic number, because the mean of its divisors is an integer number (37088064).

Almost surely, 2^513121545 is an apocalyptic number.

It is an amenable number.

513121545 is a deficient number, since it is larger than the sum of its proper divisors (376991991).

513121545 is a wasteful number, since it uses less digits than its factorization.

513121545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9021 (or 9018 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 513121545 is about 22652.1863183226. The cubic root of 513121545 is about 800.5837120176.

The spelling of 513121545 in words is "five hundred thirteen million, one hundred twenty-one thousand, five hundred forty-five".