53120111 has 4 divisors (see below), whose sum is σ = 57949224. Its totient is φ = 48291000.

The previous prime is 53120099. The next prime is 53120117. The reversal of 53120111 is 11102135.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53120111 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 (53120117) 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, 2414540 + ... + 2414561.

It is an arithmetic number, because the mean of its divisors is an integer number (14487306).

Almost surely, 2^53120111 is an apocalyptic number.

53120111 is a deficient number, since it is larger than the sum of its proper divisors (4829113).

53120111 is a wasteful number, since it uses less digits than its factorization.

53120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4829112.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 53120111 is about 7288.3544782070. The cubic root of 53120111 is about 375.9121168341.

Adding to 53120111 its reverse (11102135), we get a palindrome (64222246).

The spelling of 53120111 in words is "fifty-three million, one hundred twenty thousand, one hundred eleven".