53911597 has 4 divisors (see below), whose sum is σ = 55226556. Its totient is φ = 52596640.

The previous prime is 53911577. The next prime is 53911601. The reversal of 53911597 is 79511935.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79511935 = 5 ⋅15902387.

It can be written as a sum of positive squares in 2 ways, for example, as 2157961 + 51753636 = 1469^2 + 7194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53911597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53911577) 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, 657418 + ... + 657499.

It is an arithmetic number, because the mean of its divisors is an integer number (13806639).

Almost surely, 2^53911597 is an apocalyptic number.

It is an amenable number.

53911597 is a deficient number, since it is larger than the sum of its proper divisors (1314959).

53911597 is a wasteful number, since it uses less digits than its factorization.

53911597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314958.

The product of its digits is 42525, while the sum is 40.

The square root of 53911597 is about 7342.4517022586. The cubic root of 53911597 is about 377.7699415682.

The spelling of 53911597 in words is "fifty-three million, nine hundred eleven thousand, five hundred ninety-seven".