53251111 has 4 divisors (see below), whose sum is σ = 53269672. Its totient is φ = 53232552.

The previous prime is 53251097. The next prime is 53251117. The reversal of 53251111 is 11115235.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11115235 = 5 ⋅2223047.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53251111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53251117) 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, 3960 + ... + 11053.

It is an arithmetic number, because the mean of its divisors is an integer number (13317418).

Almost surely, 2^53251111 is an apocalyptic number.

53251111 is a deficient number, since it is larger than the sum of its proper divisors (18561).

53251111 is a wasteful number, since it uses less digits than its factorization.

53251111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18560.

The product of its digits is 150, while the sum is 19.

The square root of 53251111 is about 7297.3358837318. The cubic root of 53251111 is about 376.2208766176.

Adding to 53251111 its reverse (11115235), we get a palindrome (64366346).

The spelling of 53251111 in words is "fifty-three million, two hundred fifty-one thousand, one hundred eleven".