65172755 has 8 divisors (see below), whose sum is σ = 82323600. Its totient is φ = 49394016.

The previous prime is 65172743. The next prime is 65172761. The reversal of 65172755 is 55727156.

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 65172755 - 2¹⁸ = 64910611 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342920 + ... + 343109.

It is an arithmetic number, because the mean of its divisors is an integer number (10290450).

Almost surely, 2^65172755 is an apocalyptic number.

65172755 is a deficient number, since it is larger than the sum of its proper divisors (17150845).

65172755 is a wasteful number, since it uses less digits than its factorization.

65172755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686053.

The product of its digits is 73500, while the sum is 38.

The square root of 65172755 is about 8072.9644493210. The cubic root of 65172755 is about 402.4284661270.

The spelling of 65172755 in words is "sixty-five million, one hundred seventy-two thousand, seven hundred fifty-five".