52421522 has 4 divisors (see below), whose sum is σ = 78632286. Its totient is φ = 26210760.

The previous prime is 52421521. The next prime is 52421549. The reversal of 52421522 is 22512425.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46226401 + 6195121 = 6799^2 + 2489^2 .

It is not an unprimeable number, because it can be changed into a prime (52421521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13105379 + ... + 13105382.

Almost surely, 2^52421522 is an apocalyptic number.

52421522 is a deficient number, since it is larger than the sum of its proper divisors (26210764).

52421522 is a wasteful number, since it uses less digits than its factorization.

52421522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26210763.

The product of its digits is 1600, while the sum is 23.

The square root of 52421522 is about 7240.2708512873. The cubic root of 52421522 is about 374.2569511668.

Adding to 52421522 its reverse (22512425), we get a palindrome (74933947).

The spelling of 52421522 in words is "fifty-two million, four hundred twenty-one thousand, five hundred twenty-two".