52021524 has 24 divisors (see below), whose sum is σ = 122024448. Its totient is φ = 17248960.

The previous prime is 52021523. The next prime is 52021549. The reversal of 52021524 is 42512025.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 52021524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52021523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9057 + ... + 13640.

It is an arithmetic number, because the mean of its divisors is an integer number (5084352).

Almost surely, 2^52021524 is an apocalyptic number.

It is an amenable number.

52021524 is an abundant number, since it is smaller than the sum of its proper divisors (70002924).

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

52021524 is a wasteful number, since it uses less digits than its factorization.

52021524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22895 (or 22893 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 52021524 is about 7212.5948174010. The cubic root of 52021524 is about 373.3026076612.

Adding to 52021524 its reverse (42512025), we get a palindrome (94533549).

The spelling of 52021524 in words is "fifty-two million, twenty-one thousand, five hundred twenty-four".