53545145 has 4 divisors (see below), whose sum is σ = 64254180. Its totient is φ = 42836112.

The previous prime is 53545133. The next prime is 53545157. The reversal of 53545145 is 54154535.

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

It is an interprime number because it is at equal distance from previous prime (53545133) and next prime (53545157).

It can be written as a sum of positive squares in 2 ways, for example, as 41126569 + 12418576 = 6413^2 + 3524^2 .

It is a cyclic number.

It is not a de Polignac number, because 53545145 - 2⁸ = 53544889 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5354510 + ... + 5354519.

It is an arithmetic number, because the mean of its divisors is an integer number (16063545).

Almost surely, 2^53545145 is an apocalyptic number.

It is an amenable number.

53545145 is a deficient number, since it is larger than the sum of its proper divisors (10709035).

53545145 is a wasteful number, since it uses less digits than its factorization.

53545145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10709034.

The product of its digits is 30000, while the sum is 32.

The square root of 53545145 is about 7317.4548170795. The cubic root of 53545145 is about 376.9120593593.

The spelling of 53545145 in words is "fifty-three million, five hundred forty-five thousand, one hundred forty-five".