52551403 has 4 divisors (see below), whose sum is σ = 55642680. Its totient is φ = 49460128.

The previous prime is 52551377. The next prime is 52551413. The reversal of 52551403 is 30415525.

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

It is a cyclic number.

It is not a de Polignac number, because 52551403 - 2⁵ = 52551371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52551413) 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, 1545613 + ... + 1545646.

It is an arithmetic number, because the mean of its divisors is an integer number (13910670).

Almost surely, 2^52551403 is an apocalyptic number.

52551403 is a deficient number, since it is larger than the sum of its proper divisors (3091277).

52551403 is a wasteful number, since it uses less digits than its factorization.

52551403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091276.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 52551403 is about 7249.2346492578. The cubic root of 52551403 is about 374.5657860085.

Adding to 52551403 its reverse (30415525), we get a palindrome (82966928).

The spelling of 52551403 in words is "fifty-two million, five hundred fifty-one thousand, four hundred three".