53142665 has 16 divisors (see below), whose sum is σ = 65802240. Its totient is φ = 41179200.

The previous prime is 53142653. The next prime is 53142667. The reversal of 53142665 is 56624135.

It is not a de Polignac number, because 53142665 - 2¹⁸ = 52880521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53142667) 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, 22616 + ... + 24854.

It is an arithmetic number, because the mean of its divisors is an integer number (4112640).

Almost surely, 2^53142665 is an apocalyptic number.

It is an amenable number.

53142665 is a deficient number, since it is larger than the sum of its proper divisors (12659575).

53142665 is a wasteful number, since it uses less digits than its factorization.

53142665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392.

The product of its digits is 21600, while the sum is 32.

The square root of 53142665 is about 7289.9015768390. The cubic root of 53142665 is about 375.9653115162.

The spelling of 53142665 in words is "fifty-three million, one hundred forty-two thousand, six hundred sixty-five".