52406251 has 4 divisors (see below), whose sum is σ = 52599904. Its totient is φ = 52212600.

The previous prime is 52406227. The next prime is 52406279. The reversal of 52406251 is 15260425.

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 52406251 - 2¹¹ = 52404203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52406201) 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, 96420 + ... + 96961.

It is an arithmetic number, because the mean of its divisors is an integer number (13149976).

Almost surely, 2^52406251 is an apocalyptic number.

52406251 is a deficient number, since it is larger than the sum of its proper divisors (193653).

52406251 is a wasteful number, since it uses less digits than its factorization.

52406251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193652.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 52406251 is about 7239.2161868534. The cubic root of 52406251 is about 374.2206058341.

Adding to 52406251 its reverse (15260425), we get a palindrome (67666676).

The spelling of 52406251 in words is "fifty-two million, four hundred six thousand, two hundred fifty-one".