53969897 has 4 divisors (see below), whose sum is σ = 53985360. Its totient is φ = 53954436.

The previous prime is 53969893. The next prime is 53969911. The reversal of 53969897 is 79896935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79896935 = 5 ⋅15979387.

It is a cyclic number.

It is not a de Polignac number, because 53969897 - 2² = 53969893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53969893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254 + ... + 10392.

It is an arithmetic number, because the mean of its divisors is an integer number (13496340).

Almost surely, 2^53969897 is an apocalyptic number.

It is an amenable number.

53969897 is a deficient number, since it is larger than the sum of its proper divisors (15463).

53969897 is a wasteful number, since it uses less digits than its factorization.

53969897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15462.

The product of its digits is 3674160, while the sum is 56.

The square root of 53969897 is about 7346.4206930995. The cubic root of 53969897 is about 377.9060659810.

The spelling of 53969897 in words is "fifty-three million, nine hundred sixty-nine thousand, eight hundred ninety-seven".