651500013 has 4 divisors (see below), whose sum is σ = 868666688. Its totient is φ = 434333340.

The previous prime is 651500011. The next prime is 651500021. The reversal of 651500013 is 310005156.

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 651500013 - 2¹ = 651500011 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 (651500011) 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, 108583333 + ... + 108583338.

It is an arithmetic number, because the mean of its divisors is an integer number (217166672).

Almost surely, 2^651500013 is an apocalyptic number.

It is an amenable number.

651500013 is a deficient number, since it is larger than the sum of its proper divisors (217166675).

651500013 is a wasteful number, since it uses less digits than its factorization.

651500013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217166674.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 651500013 is about 25524.4982908577. The cubic root of 651500013 is about 866.9049369689.

Adding to 651500013 its reverse (310005156), we get a palindrome (961505169).

The spelling of 651500013 in words is "six hundred fifty-one million, five hundred thousand, thirteen".