53613817 has 4 divisors (see below), whose sum is σ = 53652816. Its totient is φ = 53574820.

The previous prime is 53613811. The next prime is 53613823. The reversal of 53613817 is 71831635.

53613817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is an interprime number because it is at equal distance from previous prime (53613811) and next prime (53613823).

It is a cyclic number.

It is not a de Polignac number, because 53613817 - 2¹¹ = 53611769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53613811) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17359 + ... + 20212.

It is an arithmetic number, because the mean of its divisors is an integer number (13413204).

Almost surely, 2^53613817 is an apocalyptic number.

It is an amenable number.

53613817 is a deficient number, since it is larger than the sum of its proper divisors (38999).

53613817 is a wasteful number, since it uses less digits than its factorization.

53613817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38998.

The product of its digits is 15120, while the sum is 34.

The square root of 53613817 is about 7322.1456554756. The cubic root of 53613817 is about 377.0731212548.

The spelling of 53613817 in words is "fifty-three million, six hundred thirteen thousand, eight hundred seventeen".