521461013 has 8 divisors (see below), whose sum is σ = 538759680. Its totient is φ = 504192240.

The previous prime is 521460983. The next prime is 521461019. The reversal of 521461013 is 310164125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521461013 - 2⁶ = 521460949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 521461013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521461019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31256 + ... + 44942.

It is an arithmetic number, because the mean of its divisors is an integer number (67344960).

Almost surely, 2^521461013 is an apocalyptic number.

It is an amenable number.

521461013 is a deficient number, since it is larger than the sum of its proper divisors (17298667).

521461013 is a wasteful number, since it uses less digits than its factorization.

521461013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14947.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 521461013 is about 22835.5208611496. The cubic root of 521461013 is about 804.8975670495.

The spelling of 521461013 in words is "five hundred twenty-one million, four hundred sixty-one thousand, thirteen".