53747917 has 4 divisors (see below), whose sum is σ = 53879740. Its totient is φ = 53616096.

The previous prime is 53747899. The next prime is 53747927. The reversal of 53747917 is 71974735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48846121 + 4901796 = 6989^2 + 2214^2 .

It is a cyclic number.

It is not a de Polignac number, because 53747917 - 2¹⁹ = 53223629 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 (53747927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65298 + ... + 66115.

It is an arithmetic number, because the mean of its divisors is an integer number (13469935).

Almost surely, 2^53747917 is an apocalyptic number.

It is an amenable number.

53747917 is a deficient number, since it is larger than the sum of its proper divisors (131823).

53747917 is a wasteful number, since it uses less digits than its factorization.

53747917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131822.

The product of its digits is 185220, while the sum is 43.

The square root of 53747917 is about 7331.2970885103. The cubic root of 53747917 is about 377.3872405644.

The spelling of 53747917 in words is "fifty-three million, seven hundred forty-seven thousand, nine hundred seventeen".