53205145 has 16 divisors (see below), whose sum is σ = 75322368. Its totient is φ = 35305920.

The previous prime is 53205143. The next prime is 53205161. The reversal of 53205145 is 54150235.

It is not a de Polignac number, because 53205145 - 2¹ = 53205143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53205143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23434 + ... + 25603.

It is an arithmetic number, because the mean of its divisors is an integer number (4707648).

Almost surely, 2^53205145 is an apocalyptic number.

It is an amenable number.

53205145 is a deficient number, since it is larger than the sum of its proper divisors (22117223).

53205145 is a wasteful number, since it uses less digits than its factorization.

53205145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49080.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 53205145 is about 7294.1856982120. The cubic root of 53205145 is about 376.1125950142.

The spelling of 53205145 in words is "fifty-three million, two hundred five thousand, one hundred forty-five".