513445001 has 4 divisors (see below), whose sum is σ = 515339904. Its totient is φ = 511550100.

The previous prime is 513444977. The next prime is 513445013. The reversal of 513445001 is 100544315.

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 a cyclic number.

It is not a de Polignac number, because 513445001 - 2²² = 509250697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513445021) 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, 947045 + ... + 947586.

It is an arithmetic number, because the mean of its divisors is an integer number (128834976).

Almost surely, 2^513445001 is an apocalyptic number.

It is an amenable number.

513445001 is a deficient number, since it is larger than the sum of its proper divisors (1894903).

513445001 is a wasteful number, since it uses less digits than its factorization.

513445001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894902.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 513445001 is about 22659.3248134184. The cubic root of 513445001 is about 800.7518977783.

Adding to 513445001 its reverse (100544315), we get a palindrome (613989316).

The spelling of 513445001 in words is "five hundred thirteen million, four hundred forty-five thousand, one".