53865969 has 16 divisors (see below), whose sum is σ = 77647680. Its totient is φ = 33099840.

The previous prime is 53865961. The next prime is 53865983. The reversal of 53865969 is 96956835.

It is not a de Polignac number, because 53865969 - 2³ = 53865961 is a prime.

It is a super-2 number, since 2×53865969² = 5803085232617922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53865961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10662 + ... + 14879.

It is an arithmetic number, because the mean of its divisors is an integer number (4852980).

Almost surely, 2^53865969 is an apocalyptic number.

It is an amenable number.

53865969 is a deficient number, since it is larger than the sum of its proper divisors (23781711).

53865969 is a wasteful number, since it uses less digits than its factorization.

53865969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25600.

The product of its digits is 1749600, while the sum is 51.

The square root of 53865969 is about 7339.3439080070. The cubic root of 53865969 is about 377.6633364780.

The spelling of 53865969 in words is "fifty-three million, eight hundred sixty-five thousand, nine hundred sixty-nine".