511501013 has 4 divisors (see below), whose sum is σ = 511633920. Its totient is φ = 511368108.

The previous prime is 511500973. The next prime is 511501019. The reversal of 511501013 is 310105115.

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 511501013 - 2⁶ = 511500949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 511500982 and 511501000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511501019) 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, 60503 + ... + 68436.

It is an arithmetic number, because the mean of its divisors is an integer number (127908480).

Almost surely, 2^511501013 is an apocalyptic number.

It is an amenable number.

511501013 is a deficient number, since it is larger than the sum of its proper divisors (132907).

511501013 is a wasteful number, since it uses less digits than its factorization.

511501013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132906.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 511501013 is about 22616.3881510731. The cubic root of 511501013 is about 799.7400264639.

Adding to 511501013 its reverse (310105115), we get a palindrome (821606128).

The spelling of 511501013 in words is "five hundred eleven million, five hundred one thousand, thirteen".