521249350 has 12 divisors (see below), whose sum is σ = 969523884. Its totient is φ = 208499720.

The previous prime is 521249327. The next prime is 521249353. The reversal of 521249350 is 53942125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521249353) 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 5 ways as a sum of consecutive naturals, for example, 5212444 + ... + 5212543.

It is an arithmetic number, because the mean of its divisors is an integer number (80793657).

Almost surely, 2^521249350 is an apocalyptic number.

521249350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

521249350 is a deficient number, since it is larger than the sum of its proper divisors (448274534).

521249350 is a wasteful number, since it uses less digits than its factorization.

521249350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10424999 (or 10424994 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 521249350 is about 22830.8858785637. The cubic root of 521249350 is about 804.7886486544.

The spelling of 521249350 in words is "five hundred twenty-one million, two hundred forty-nine thousand, three hundred fifty".