521055494 has 16 divisors (see below), whose sum is σ = 786359616. Its totient is φ = 258940800.

The previous prime is 521055433. The next prime is 521055523. The reversal of 521055494 is 494550125.

It is a happy number.

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, 292334 + ... + 294110.

It is an arithmetic number, because the mean of its divisors is an integer number (49147476).

Almost surely, 2^521055494 is an apocalyptic number.

521055494 is a deficient number, since it is larger than the sum of its proper divisors (265304122).

521055494 is a wasteful number, since it uses less digits than its factorization.

521055494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 521055494 is about 22826.6400067991. The cubic root of 521055494 is about 804.6888675848.

The spelling of 521055494 in words is "five hundred twenty-one million, fifty-five thousand, four hundred ninety-four".