53115345 has 20 divisors (see below), whose sum is σ = 95214900. Its totient is φ = 28327968.

The previous prime is 53115331. The next prime is 53115367. The reversal of 53115345 is 54351135.

53115345 is a `hidden beast` number, since 5 + 311 + 5 + 345 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 29844369 + 23270976 = 5463^2 + 4824^2 .

It is not a de Polignac number, because 53115345 - 2⁴ = 53115329 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65170 + ... + 65979.

It is an arithmetic number, because the mean of its divisors is an integer number (4760745).

Almost surely, 2^53115345 is an apocalyptic number.

It is an amenable number.

53115345 is a deficient number, since it is larger than the sum of its proper divisors (42099555).

53115345 is a wasteful number, since it uses less digits than its factorization.

53115345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131166 (or 131157 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 53115345 is about 7288.0275109250. The cubic root of 53115345 is about 375.9008740694.

It can be divided in two parts, 531 and 15345, that added together give a square (15876 = 126²).

The spelling of 53115345 in words is "fifty-three million, one hundred fifteen thousand, three hundred forty-five".