52521072 has 40 divisors (see below), whose sum is σ = 137324544. Its totient is φ = 17294784.

The previous prime is 52521071. The next prime is 52521083. The reversal of 52521072 is 27012525.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52521071) 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, 2608 + ... + 10575.

Almost surely, 2^52521072 is an apocalyptic number.

It is an amenable number.

52521072 is an abundant number, since it is smaller than the sum of its proper divisors (84803472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52521072 is a wasteful number, since it uses less digits than its factorization.

52521072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13277 (or 13271 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 52521072 is about 7247.1423333615. The cubic root of 52521072 is about 374.4937096501.

Adding to 52521072 its reverse (27012525), we get a palindrome (79533597).

The spelling of 52521072 in words is "fifty-two million, five hundred twenty-one thousand, seventy-two".