521434554 has 8 divisors (see below), whose sum is σ = 1042869120. Its totient is φ = 173811516.

The previous prime is 521434553. The next prime is 521434607. The reversal of 521434554 is 455434125.

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

521434554 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (521434553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43452874 + ... + 43452885.

It is an arithmetic number, because the mean of its divisors is an integer number (130358640).

Almost surely, 2^521434554 is an apocalyptic number.

521434554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

521434554 is a wasteful number, since it uses less digits than its factorization.

521434554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86905764.

The product of its digits is 48000, while the sum is 33.

The square root of 521434554 is about 22834.9415151430. The cubic root of 521434554 is about 804.8839532833.

Adding to 521434554 its reverse (455434125), we get a palindrome (976868679).

The spelling of 521434554 in words is "five hundred twenty-one million, four hundred thirty-four thousand, five hundred fifty-four".