521981048 has 32 divisors (see below), whose sum is σ = 986684160. Its totient is φ = 258876000.

The previous prime is 521981017. The next prime is 521981059. The reversal of 521981048 is 840189125.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

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, 694673 + ... + 695423.

It is an arithmetic number, because the mean of its divisors is an integer number (30833880).

Almost surely, 2^521981048 is an apocalyptic number.

It is an amenable number.

521981048 is a deficient number, since it is larger than the sum of its proper divisors (464703112).

521981048 is a wasteful number, since it uses less digits than its factorization.

521981048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 521981048 is about 22846.9045605745. The cubic root of 521981048 is about 805.1650436389.

The spelling of 521981048 in words is "five hundred twenty-one million, nine hundred eighty-one thousand, forty-eight".