52404551 has 4 divisors (see below), whose sum is σ = 53263704. Its totient is φ = 51545400.

The previous prime is 52404497. The next prime is 52404563. The reversal of 52404551 is 15540425.

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-52404551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52404551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52404581) 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, 429485 + ... + 429606.

It is an arithmetic number, because the mean of its divisors is an integer number (13315926).

Almost surely, 2^52404551 is an apocalyptic number.

52404551 is a deficient number, since it is larger than the sum of its proper divisors (859153).

52404551 is an equidigital number, since it uses as much as digits as its factorization.

52404551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859152.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 52404551 is about 7239.0987698746. The cubic root of 52404551 is about 374.2165593581.

Adding to 52404551 its reverse (15540425), we get a palindrome (67944976).

The spelling of 52404551 in words is "fifty-two million, four hundred four thousand, five hundred fifty-one".