512415401 has 4 divisors (see below), whose sum is σ = 517698132. Its totient is φ = 507132672.

The previous prime is 512415383. The next prime is 512415457. The reversal of 512415401 is 104514215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 213160000 + 299255401 = 14600^2 + 17299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512415401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512415901) 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, 2641220 + ... + 2641413.

It is an arithmetic number, because the mean of its divisors is an integer number (129424533).

Almost surely, 2^512415401 is an apocalyptic number.

It is an amenable number.

512415401 is a deficient number, since it is larger than the sum of its proper divisors (5282731).

512415401 is an equidigital number, since it uses as much as digits as its factorization.

512415401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5282730.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 512415401 is about 22636.5942888943. The cubic root of 512415401 is about 800.2162962022.

Adding to 512415401 its reverse (104514215), we get a palindrome (616929616).

The spelling of 512415401 in words is "five hundred twelve million, four hundred fifteen thousand, four hundred one".