521053696 has 20 divisors (see below), whose sum is σ = 1041090732. Its totient is φ = 260526592.

The previous prime is 521053693. The next prime is 521053711. The reversal of 521053696 is 696350125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521053691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508330 + ... + 509353.

Almost surely, 2^521053696 is an apocalyptic number.

It is an amenable number.

521053696 is a deficient number, since it is larger than the sum of its proper divisors (520037036).

521053696 is an equidigital number, since it uses as much as digits as its factorization.

521053696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017701 (or 1017685 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 521053696 is about 22826.6006229574. The cubic root of 521053696 is about 804.6879420070.

The spelling of 521053696 in words is "five hundred twenty-one million, fifty-three thousand, six hundred ninety-six".