521107713 has 48 divisors (see below), whose sum is σ = 881487360. Its totient is φ = 290489472.

The previous prime is 521107703. The next prime is 521107723. The reversal of 521107713 is 317701125.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (521107703) and next prime (521107723).

It is not a de Polignac number, because 521107713 - 2¹⁰ = 521106689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521107703) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 797695 + ... + 798347.

It is an arithmetic number, because the mean of its divisors is an integer number (18364320).

Almost surely, 2^521107713 is an apocalyptic number.

521107713 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

521107713 is a deficient number, since it is larger than the sum of its proper divisors (360379647).

521107713 is a wasteful number, since it uses less digits than its factorization.

521107713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 521107713 is about 22827.7837951913. The cubic root of 521107713 is about 804.7157480514.

Adding to 521107713 its reverse (317701125), we get a palindrome (838808838).

The spelling of 521107713 in words is "five hundred twenty-one million, one hundred seven thousand, seven hundred thirteen".