65497051 has 4 divisors (see below), whose sum is σ = 67755600. Its totient is φ = 63238504.

The previous prime is 65497027. The next prime is 65497057. The reversal of 65497051 is 15079456.

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

It is a cyclic number.

It is not a de Polignac number, because 65497051 - 2⁹ = 65496539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65497051.

It is not an unprimeable number, because it can be changed into a prime (65497057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129231 + ... + 1129288.

It is an arithmetic number, because the mean of its divisors is an integer number (16938900).

Almost surely, 2^65497051 is an apocalyptic number.

65497051 is a deficient number, since it is larger than the sum of its proper divisors (2258549).

65497051 is a wasteful number, since it uses less digits than its factorization.

65497051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258548.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 65497051 is about 8093.0248362402. The cubic root of 65497051 is about 403.0948492643.

The spelling of 65497051 in words is "sixty-five million, four hundred ninety-seven thousand, fifty-one".