521052354 has 24 divisors (see below), whose sum is σ = 1156483692. Its totient is φ = 169447680.

The previous prime is 521052341. The next prime is 521052359. The reversal of 521052354 is 453250125.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 519156225 + 1896129 = 22785^2 + 1377^2 .

It is not an unprimeable number, because it can be changed into a prime (521052359) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 352279 + ... + 353754.

Almost surely, 2^521052354 is an apocalyptic number.

521052354 is an abundant number, since it is smaller than the sum of its proper divisors (635431338).

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

521052354 is a wasteful number, since it uses less digits than its factorization.

521052354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706082 (or 706079 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 521052354 is about 22826.5712274095. The cubic root of 521052354 is about 804.6872511683.

The spelling of 521052354 in words is "five hundred twenty-one million, fifty-two thousand, three hundred fifty-four".