65553145 has 16 divisors (see below), whose sum is σ = 90731520. Its totient is φ = 44535744.

The previous prime is 65553143. The next prime is 65553149. The reversal of 65553145 is 54135556.

It is a cyclic number.

It is not a de Polignac number, because 65553145 - 2¹ = 65553143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65553145.

It is not an unprimeable number, because it can be changed into a prime (65553143) 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, 4777 + ... + 12406.

It is an arithmetic number, because the mean of its divisors is an integer number (5670720).

Almost surely, 2^65553145 is an apocalyptic number.

It is an amenable number.

65553145 is a deficient number, since it is larger than the sum of its proper divisors (25178375).

65553145 is a wasteful number, since it uses less digits than its factorization.

65553145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17304.

The product of its digits is 45000, while the sum is 34.

The square root of 65553145 is about 8096.4896714564. The cubic root of 65553145 is about 403.2098913423.

The spelling of 65553145 in words is "sixty-five million, five hundred fifty-three thousand, one hundred forty-five".