53772165 has 24 divisors (see below), whose sum is σ = 94487640. Its totient is φ = 28283904.

The previous prime is 53772151. The next prime is 53772179. The reversal of 53772165 is 56127735.

It is an interprime number because it is at equal distance from previous prime (53772151) and next prime (53772179).

It can be written as a sum of positive squares in 4 ways, for example, as 3560769 + 50211396 = 1887^2 + 7086^2 .

It is not a de Polignac number, because 53772165 - 2⁵ = 53772133 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4900 + ... + 11469.

It is an arithmetic number, because the mean of its divisors is an integer number (3936985).

Almost surely, 2^53772165 is an apocalyptic number.

It is an amenable number.

53772165 is a deficient number, since it is larger than the sum of its proper divisors (40715475).

53772165 is a wasteful number, since it uses less digits than its factorization.

53772165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16453 (or 16450 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 53772165 is about 7332.9506339536. The cubic root of 53772165 is about 377.4439839109.

The spelling of 53772165 in words is "fifty-three million, seven hundred seventy-two thousand, one hundred sixty-five".