65136501 has 16 divisors (see below), whose sum is σ = 98553600. Its totient is φ = 42499584.

The previous prime is 65136499. The next prime is 65136517. The reversal of 65136501 is 10563156.

It is a happy number.

65136501 is a `hidden beast` number, since 6 + 5 + 1 + 3 + 650 + 1 = 666.

It is not a de Polignac number, because 65136501 - 2¹ = 65136499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65136521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24396 + ... + 26933.

It is an arithmetic number, because the mean of its divisors is an integer number (6159600).

Almost surely, 2^65136501 is an apocalyptic number.

It is an amenable number.

65136501 is a deficient number, since it is larger than the sum of its proper divisors (33417099).

65136501 is a wasteful number, since it uses less digits than its factorization.

65136501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51385 (or 51379 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 65136501 is about 8070.7187412275. The cubic root of 65136501 is about 402.3538319350.

Adding to 65136501 its reverse (10563156), we get a palindrome (75699657).

The spelling of 65136501 in words is "sixty-five million, one hundred thirty-six thousand, five hundred one".