53123251 has 4 divisors (see below), whose sum is σ = 53528904. Its totient is φ = 52717600.

The previous prime is 53123233. The next prime is 53123263. The reversal of 53123251 is 15232135.

53123251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15232135 = 5 ⋅3046427.

It is a cyclic number.

It is not a de Polignac number, because 53123251 - 2⁵ = 53123219 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53123281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202630 + ... + 202891.

It is an arithmetic number, because the mean of its divisors is an integer number (13382226).

Almost surely, 2^53123251 is an apocalyptic number.

53123251 is a deficient number, since it is larger than the sum of its proper divisors (405653).

53123251 is a wasteful number, since it uses less digits than its factorization.

53123251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405652.

The product of its digits is 900, while the sum is 22.

The square root of 53123251 is about 7288.5698871589. The cubic root of 53123251 is about 375.9195235756.

Adding to 53123251 its reverse (15232135), we get a palindrome (68355386).

The spelling of 53123251 in words is "fifty-three million, one hundred twenty-three thousand, two hundred fifty-one".