521406796 has 12 divisors (see below), whose sum is σ = 966136248. Its totient is φ = 245367872.

The previous prime is 521406749. The next prime is 521406811. The reversal of 521406796 is 697604125.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3833806 + ... + 3833941.

It is an arithmetic number, because the mean of its divisors is an integer number (80511354).

Almost surely, 2^521406796 is an apocalyptic number.

It is an amenable number.

521406796 is a deficient number, since it is larger than the sum of its proper divisors (444729452).

521406796 is a wasteful number, since it uses less digits than its factorization.

521406796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7667768 (or 7667766 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 521406796 is about 22834.3337104458. Note that the first 3 decimals coincide. The cubic root of 521406796 is about 804.8696706566.

The spelling of 521406796 in words is "five hundred twenty-one million, four hundred six thousand, seven hundred ninety-six".