52521447 has 16 divisors (see below), whose sum is σ = 78173568. Its totient is φ = 31090080.

The previous prime is 52521439. The next prime is 52521461. The reversal of 52521447 is 74412525.

It is not a de Polignac number, because 52521447 - 2³ = 52521439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52521047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17088 + ... + 19925.

It is an arithmetic number, because the mean of its divisors is an integer number (4885848).

Almost surely, 2^52521447 is an apocalyptic number.

52521447 is a deficient number, since it is larger than the sum of its proper divisors (25652121).

52521447 is a wasteful number, since it uses less digits than its factorization.

52521447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37070.

The product of its digits is 11200, while the sum is 30.

The square root of 52521447 is about 7247.1682055821. The cubic root of 52521447 is about 374.4946009419.

The spelling of 52521447 in words is "fifty-two million, five hundred twenty-one thousand, four hundred forty-seven".