521552071 has 8 divisors (see below), whose sum is σ = 572872320. Its totient is φ = 472618872.

The previous prime is 521552069. The next prime is 521552113. The reversal of 521552071 is 170255125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521552071 - 2¹ = 521552069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521552671) 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, 596305 + ... + 597178.

It is an arithmetic number, because the mean of its divisors is an integer number (71609040).

Almost surely, 2^521552071 is an apocalyptic number.

521552071 is a deficient number, since it is larger than the sum of its proper divisors (51320249).

521552071 is a wasteful number, since it uses less digits than its factorization.

521552071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193525.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 521552071 is about 22837.5145539089. The cubic root of 521552071 is about 804.9444149730.

The spelling of 521552071 in words is "five hundred twenty-one million, five hundred fifty-two thousand, seventy-one".