53111345 has 12 divisors (see below), whose sum is σ = 74139444. Its totient is φ = 36419040.

The previous prime is 53111323. The next prime is 53111351. The reversal of 53111345 is 54311135.

It can be written as a sum of positive squares in 2 ways, for example, as 24285184 + 28826161 = 4928^2 + 5369^2 .

It is not a de Polignac number, because 53111345 - 2¹⁶ = 53045809 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 53111345.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108146 + ... + 108635.

It is an arithmetic number, because the mean of its divisors is an integer number (6178287).

Almost surely, 2^53111345 is an apocalyptic number.

It is an amenable number.

53111345 is a deficient number, since it is larger than the sum of its proper divisors (21028099).

53111345 is a wasteful number, since it uses less digits than its factorization.

53111345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216800 (or 216793 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 53111345 is about 7287.7530830840. The cubic root of 53111345 is about 375.8914377427.

The spelling of 53111345 in words is "fifty-three million, one hundred eleven thousand, three hundred forty-five".