65148121 has 4 divisors (see below), whose sum is σ = 67980672. Its totient is φ = 62315572.

The previous prime is 65148113. The next prime is 65148137. The reversal of 65148121 is 12184156.

65148121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65148121 - 2³ = 65148113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65148121.

It is not an unprimeable number, because it can be changed into a prime (65148191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416241 + ... + 1416286.

It is an arithmetic number, because the mean of its divisors is an integer number (16995168).

Almost surely, 2^65148121 is an apocalyptic number.

It is an amenable number.

65148121 is a deficient number, since it is larger than the sum of its proper divisors (2832551).

65148121 is a wasteful number, since it uses less digits than its factorization.

65148121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832550.

The product of its digits is 1920, while the sum is 28.

The square root of 65148121 is about 8071.4385954426. The cubic root of 65148121 is about 402.3777564293.

The spelling of 65148121 in words is "sixty-five million, one hundred forty-eight thousand, one hundred twenty-one".