52421542 has 4 divisors (see below), whose sum is σ = 78632316. Its totient is φ = 26210770.

The previous prime is 52421521. The next prime is 52421549. The reversal of 52421542 is 24512425.

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

It is a super-3 number, since 3×52421542³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52421549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13105384 + ... + 13105387.

It is an arithmetic number, because the mean of its divisors is an integer number (19658079).

Almost surely, 2^52421542 is an apocalyptic number.

52421542 is a deficient number, since it is larger than the sum of its proper divisors (26210774).

52421542 is a wasteful number, since it uses less digits than its factorization.

52421542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26210773.

The product of its digits is 3200, while the sum is 25.

The square root of 52421542 is about 7240.2722324509. The cubic root of 52421542 is about 374.2569987626.

Adding to 52421542 its reverse (24512425), we get a palindrome (76933967).

The spelling of 52421542 in words is "fifty-two million, four hundred twenty-one thousand, five hundred forty-two".