65275121 has 4 divisors (see below), whose sum is σ = 69114852. Its totient is φ = 61435392.

The previous prime is 65275103. The next prime is 65275139. The reversal of 65275121 is 12157256.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (65275103) and next prime (65275139).

It can be written as a sum of positive squares in 2 ways, for example, as 23814400 + 41460721 = 4880^2 + 6439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65275121 is a prime.

It is a super-3 number, since 3×65275121³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65275421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1919840 + ... + 1919873.

It is an arithmetic number, because the mean of its divisors is an integer number (17278713).

Almost surely, 2^65275121 is an apocalyptic number.

It is an amenable number.

65275121 is a deficient number, since it is larger than the sum of its proper divisors (3839731).

65275121 is a wasteful number, since it uses less digits than its factorization.

65275121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3839730.

The product of its digits is 4200, while the sum is 29.

The square root of 65275121 is about 8079.3020119315. The cubic root of 65275121 is about 402.6390522992.

The spelling of 65275121 in words is "sixty-five million, two hundred seventy-five thousand, one hundred twenty-one".