513312541 has 4 divisors (see below), whose sum is σ = 586642912. Its totient is φ = 439982172.

The previous prime is 513312511. The next prime is 513312593. The reversal of 513312541 is 145213315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 513312541 - 2⁵ = 513312509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513312511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36665175 + ... + 36665188.

It is an arithmetic number, because the mean of its divisors is an integer number (146660728).

Almost surely, 2^513312541 is an apocalyptic number.

It is an amenable number.

513312541 is a deficient number, since it is larger than the sum of its proper divisors (73330371).

513312541 is an equidigital number, since it uses as much as digits as its factorization.

513312541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73330370.

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

The square root of 513312541 is about 22656.4017663882. The cubic root of 513312541 is about 800.6830317727.

Adding to 513312541 its reverse (145213315), we get a palindrome (658525856).

The spelling of 513312541 in words is "five hundred thirteen million, three hundred twelve thousand, five hundred forty-one".