521016134 has 8 divisors (see below), whose sum is σ = 786319320. Its totient is φ = 258909696.

The previous prime is 521016121. The next prime is 521016137. The reversal of 521016134 is 431610125.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521016137) 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, 798779 + ... + 799430.

It is an arithmetic number, because the mean of its divisors is an integer number (98289915).

Almost surely, 2^521016134 is an apocalyptic number.

521016134 is a deficient number, since it is larger than the sum of its proper divisors (265303186).

521016134 is a wasteful number, since it uses less digits than its factorization.

521016134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598374.

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

The square root of 521016134 is about 22825.7778399773. Note that the first 3 decimals coincide. The cubic root of 521016134 is about 804.6686052828.

Adding to 521016134 its reverse (431610125), we get a palindrome (952626259).

The spelling of 521016134 in words is "five hundred twenty-one million, sixteen thousand, one hundred thirty-four".