65921053 has 16 divisors (see below), whose sum is σ = 77405760. Its totient is φ = 55468800.

The previous prime is 65921041. The next prime is 65921083. The reversal of 65921053 is 35012956.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65921053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65921033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8518 + ... + 14296.

It is an arithmetic number, because the mean of its divisors is an integer number (4837860).

Almost surely, 2^65921053 is an apocalyptic number.

It is an amenable number.

65921053 is a deficient number, since it is larger than the sum of its proper divisors (11484707).

65921053 is a wasteful number, since it uses less digits than its factorization.

65921053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5868.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 65921053 is about 8119.1780987979. The cubic root of 65921053 is about 403.9628045519.

It can be divided in two parts, 659 and 21053, that added together give a palindrome (21712).

The spelling of 65921053 in words is "sixty-five million, nine hundred twenty-one thousand, fifty-three".