52442399 has 4 divisors (see below), whose sum is σ = 55527264. Its totient is φ = 49357536.

The previous prime is 52442363. The next prime is 52442417. The reversal of 52442399 is 99324425.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52442399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52442309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542407 + ... + 1542440.

It is an arithmetic number, because the mean of its divisors is an integer number (13881816).

Almost surely, 2^52442399 is an apocalyptic number.

52442399 is a deficient number, since it is larger than the sum of its proper divisors (3084865).

52442399 is a wasteful number, since it uses less digits than its factorization.

52442399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084864.

The product of its digits is 77760, while the sum is 38.

The square root of 52442399 is about 7241.7124356053. The cubic root of 52442399 is about 374.3066274897.

The spelling of 52442399 in words is "fifty-two million, four hundred forty-two thousand, three hundred ninety-nine".