65172255 has 16 divisors (see below), whose sum is σ = 104736480. Its totient is φ = 34604928.

The previous prime is 65172253. The next prime is 65172269. The reversal of 65172255 is 55227156.

It is not a de Polignac number, because 65172255 - 2¹ = 65172253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65172253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6052 + ... + 12921.

It is an arithmetic number, because the mean of its divisors is an integer number (6546030).

Almost surely, 2^65172255 is an apocalyptic number.

65172255 is a deficient number, since it is larger than the sum of its proper divisors (39564225).

65172255 is a wasteful number, since it uses less digits than its factorization.

65172255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19210.

The product of its digits is 21000, while the sum is 33.

The square root of 65172255 is about 8072.9334817029. The cubic root of 65172255 is about 402.4274369917.

The spelling of 65172255 in words is "sixty-five million, one hundred seventy-two thousand, two hundred fifty-five".