53918065 has 12 divisors (see below), whose sum is σ = 66506076. Its totient is φ = 41963328.

The previous prime is 53918027. The next prime is 53918077. The reversal of 53918065 is 56081935.

It can be written as a sum of positive squares in 6 ways, for example, as 1962801 + 51955264 = 1401^2 + 7208^2 .

It is not a de Polignac number, because 53918065 - 2⁷ = 53917937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2907 + ... + 10783.

It is an arithmetic number, because the mean of its divisors is an integer number (5542173).

Almost surely, 2^53918065 is an apocalyptic number.

It is an amenable number.

53918065 is a deficient number, since it is larger than the sum of its proper divisors (12588011).

53918065 is an equidigital number, since it uses as much as digits as its factorization.

53918065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7956 (or 7919 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 53918065 is about 7342.8921413841. The cubic root of 53918065 is about 377.7850485112.

It can be divided in two parts, 5391 and 8065, that added together give a square (13456 = 116²).

The spelling of 53918065 in words is "fifty-three million, nine hundred eighteen thousand, sixty-five".