53118251 has 16 divisors (see below), whose sum is σ = 57683808. Its totient is φ = 48729600.

The previous prime is 53118239. The next prime is 53118253. The reversal of 53118251 is 15281135.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53118251 - 2⁶ = 53118187 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 53118251.

It is not an unprimeable number, because it can be changed into a prime (53118253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187556 + ... + 187838.

It is an arithmetic number, because the mean of its divisors is an integer number (3605238).

Almost surely, 2^53118251 is an apocalyptic number.

53118251 is a deficient number, since it is larger than the sum of its proper divisors (4565557).

53118251 is a wasteful number, since it uses less digits than its factorization.

53118251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542.

The product of its digits is 1200, while the sum is 26.

The square root of 53118251 is about 7288.2268762711. The cubic root of 53118251 is about 375.9077292636.

Adding to 53118251 its reverse (15281135), we get a palindrome (68399386).

The spelling of 53118251 in words is "fifty-three million, one hundred eighteen thousand, two hundred fifty-one".