521773134 has 16 divisors (see below), whose sum is σ = 1068999120. Its totient is φ = 169682240.

The previous prime is 521773127. The next prime is 521773157. The reversal of 521773134 is 431377125.

It is a junction number, because it is equal to n+sod(n) for n = 521773095 and 521773104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060269 + ... + 1060760.

It is an arithmetic number, because the mean of its divisors is an integer number (66812445).

Almost surely, 2^521773134 is an apocalyptic number.

521773134 is an abundant number, since it is smaller than the sum of its proper divisors (547225986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521773134 is a wasteful number, since it uses less digits than its factorization.

521773134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121075.

The product of its digits is 17640, while the sum is 33.

The square root of 521773134 is about 22842.3539505017. The cubic root of 521773134 is about 805.0581257619.

The spelling of 521773134 in words is "five hundred twenty-one million, seven hundred seventy-three thousand, one hundred thirty-four".