521353084 has 24 divisors (see below), whose sum is σ = 1097586560. Its totient is φ = 211676976.

The previous prime is 521353081. The next prime is 521353109. The reversal of 521353084 is 480353125.

It is a super-2 number, since 2×521353084² = 543618076392622112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521353081) 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, 489462 + ... + 490525.

Almost surely, 2^521353084 is an apocalyptic number.

It is an amenable number.

521353084 is an abundant number, since it is smaller than the sum of its proper divisors (576233476).

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

521353084 is a wasteful number, since it uses less digits than its factorization.

521353084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980017 (or 980015 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 521353084 is about 22833.1575565010. The cubic root of 521353084 is about 804.8420321955.

The spelling of 521353084 in words is "five hundred twenty-one million, three hundred fifty-three thousand, eighty-four".