53001665 has 16 divisors (see below), whose sum is σ = 68781312. Its totient is φ = 39055104.

The previous prime is 53001617. The next prime is 53001677. The reversal of 53001665 is 56610035.

53001665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 53001665 - 2⁸ = 53001409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2639 + ... + 10628.

It is an arithmetic number, because the mean of its divisors is an integer number (4298832).

Almost surely, 2^53001665 is an apocalyptic number.

It is an amenable number.

53001665 is a deficient number, since it is larger than the sum of its proper divisors (15779647).

53001665 is a wasteful number, since it uses less digits than its factorization.

53001665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13336.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 53001665 is about 7280.2242410519. The cubic root of 53001665 is about 375.6325088500.

The spelling of 53001665 in words is "fifty-three million, one thousand, six hundred sixty-five".