521212944 has 40 divisors (see below), whose sum is σ = 1538820160. Its totient is φ = 148917888.

The previous prime is 521212927. The next prime is 521212949. The reversal of 521212944 is 449212125.

It is not an unprimeable number, because it can be changed into a prime (521212949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775279 + ... + 775950.

It is an arithmetic number, because the mean of its divisors is an integer number (38470504).

Almost surely, 2^521212944 is an apocalyptic number.

It is an amenable number.

521212944 is an abundant number, since it is smaller than the sum of its proper divisors (1017607216).

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

521212944 is a wasteful number, since it uses less digits than its factorization.

521212944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551247 (or 1551241 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 521212944 is about 22830.0885675023. The cubic root of 521212944 is about 804.7699117373.

The spelling of 521212944 in words is "five hundred twenty-one million, two hundred twelve thousand, nine hundred forty-four".