521540034 has 48 divisors (see below), whose sum is σ = 1089277632. Its totient is φ = 166412064.

The previous prime is 521540029. The next prime is 521540051. The reversal of 521540034 is 430045125.

It is a junction number, because it is equal to n+sod(n) for n = 521539986 and 521540013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 587539 + ... + 588425.

It is an arithmetic number, because the mean of its divisors is an integer number (22693284).

Almost surely, 2^521540034 is an apocalyptic number.

521540034 is an abundant number, since it is smaller than the sum of its proper divisors (567737598).

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

521540034 is a wasteful number, since it uses less digits than its factorization.

521540034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 521540034 is about 22837.2510167051. The cubic root of 521540034 is about 804.9382224366.

Adding to 521540034 its reverse (430045125), we get a palindrome (951585159).

The spelling of 521540034 in words is "five hundred twenty-one million, five hundred forty thousand, thirty-four".