65153421 has 12 divisors (see below), whose sum is σ = 96113472. Its totient is φ = 42511176.

The previous prime is 65153399. The next prime is 65153437. The reversal of 65153421 is 12435156.

65153421 is a `hidden beast` number, since 651 + 5 + 3 + 4 + 2 + 1 = 666.

65153421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65153421 - 2⁷ = 65153293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65153441) 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 11 ways as a sum of consecutive naturals, for example, 76591 + ... + 77436.

It is an arithmetic number, because the mean of its divisors is an integer number (8009456).

Almost surely, 2^65153421 is an apocalyptic number.

It is an amenable number.

65153421 is a deficient number, since it is larger than the sum of its proper divisors (30960051).

65153421 is a wasteful number, since it uses less digits than its factorization.

65153421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154080 (or 154077 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 65153421 is about 8071.7669069418. The cubic root of 65153421 is about 402.3886676894.

Adding to 65153421 its reverse (12435156), we get a palindrome (77588577).

The spelling of 65153421 in words is "sixty-five million, one hundred fifty-three thousand, four hundred twenty-one".