513621201 has 4 divisors (see below), whose sum is σ = 684828272. Its totient is φ = 342414132.

The previous prime is 513621193. The next prime is 513621203. The reversal of 513621201 is 102126315.

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 513621201 - 2³ = 513621193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513621203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85603531 + ... + 85603536.

It is an arithmetic number, because the mean of its divisors is an integer number (171207068).

Almost surely, 2^513621201 is an apocalyptic number.

It is an amenable number.

513621201 is a deficient number, since it is larger than the sum of its proper divisors (171207071).

513621201 is a wasteful number, since it uses less digits than its factorization.

513621201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171207070.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 513621201 is about 22663.2125039677. The cubic root of 513621201 is about 800.8434858728.

Adding to 513621201 its reverse (102126315), we get a palindrome (615747516).

The spelling of 513621201 in words is "five hundred thirteen million, six hundred twenty-one thousand, two hundred one".