53869971 has 16 divisors (see below), whose sum is σ = 74743808. Its totient is φ = 34473600.

The previous prime is 53869969. The next prime is 53869987. The reversal of 53869971 is 17996835.

It is not a de Polignac number, because 53869971 - 2¹ = 53869969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53869971.

It is not an unprimeable number, because it can be changed into a prime (53869171) 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, 9531 + ... + 14091.

It is an arithmetic number, because the mean of its divisors is an integer number (4671488).

Almost surely, 2^53869971 is an apocalyptic number.

53869971 is a deficient number, since it is larger than the sum of its proper divisors (20873837).

53869971 is a wasteful number, since it uses less digits than its factorization.

53869971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722.

The product of its digits is 408240, while the sum is 48.

The square root of 53869971 is about 7339.6165431172. The cubic root of 53869971 is about 377.6726891439.

The spelling of 53869971 in words is "fifty-three million, eight hundred sixty-nine thousand, nine hundred seventy-one".