53165145 has 16 divisors (see below), whose sum is σ = 92797632. Its totient is φ = 25776960.

The previous prime is 53165141. The next prime is 53165153. The reversal of 53165145 is 54156135.

It is not a de Polignac number, because 53165145 - 2² = 53165141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53165141) 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, 160942 + ... + 161271.

It is an arithmetic number, because the mean of its divisors is an integer number (5799852).

Almost surely, 2^53165145 is an apocalyptic number.

53165145 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53165145 is a deficient number, since it is larger than the sum of its proper divisors (39632487).

53165145 is a wasteful number, since it uses less digits than its factorization.

53165145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322232.

The product of its digits is 9000, while the sum is 30.

The square root of 53165145 is about 7291.4432727684. The cubic root of 53165145 is about 376.0183166911.

The spelling of 53165145 in words is "fifty-three million, one hundred sixty-five thousand, one hundred forty-five".