53516765 has 8 divisors (see below), whose sum is σ = 67997880. Its totient is φ = 40294912.

The previous prime is 53516761. The next prime is 53516779. The reversal of 53516765 is 56761535.

It can be written as a sum of positive squares in 4 ways, for example, as 2208196 + 51308569 = 1486^2 + 7163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53516765 - 2² = 53516761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53516761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314720 + ... + 314889.

It is an arithmetic number, because the mean of its divisors is an integer number (8499735).

Almost surely, 2^53516765 is an apocalyptic number.

It is an amenable number.

53516765 is a deficient number, since it is larger than the sum of its proper divisors (14481115).

53516765 is a wasteful number, since it uses less digits than its factorization.

53516765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629631.

The product of its digits is 94500, while the sum is 38.

The square root of 53516765 is about 7315.5153612032. The cubic root of 53516765 is about 376.8454572759.

The spelling of 53516765 in words is "fifty-three million, five hundred sixteen thousand, seven hundred sixty-five".