52125551 has 4 divisors (see below), whose sum is σ = 52140192. Its totient is φ = 52110912.

The previous prime is 52125527. The next prime is 52125599. The reversal of 52125551 is 15552125.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52125551 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 52125551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52125251) 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, 1850 + ... + 10376.

It is an arithmetic number, because the mean of its divisors is an integer number (13035048).

Almost surely, 2^52125551 is an apocalyptic number.

52125551 is a deficient number, since it is larger than the sum of its proper divisors (14641).

52125551 is an equidigital number, since it uses as much as digits as its factorization.

52125551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14640.

The product of its digits is 2500, while the sum is 26.

The square root of 52125551 is about 7219.8026981352. The cubic root of 52125551 is about 373.5512720028.

Adding to 52125551 its reverse (15552125), we get a palindrome (67677676).

The spelling of 52125551 in words is "fifty-two million, one hundred twenty-five thousand, five hundred fifty-one".