65573145 has 80 divisors (see below), whose sum is σ = 131725440. Its totient is φ = 30931200.

The previous prime is 65573141. The next prime is 65573149. The reversal of 65573145 is 54137556.

It is an interprime number because it is at equal distance from previous prime (65573141) and next prime (65573149).

It is not a de Polignac number, because 65573145 - 2² = 65573141 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 (65573141) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 182476 + ... + 182834.

It is an arithmetic number, because the mean of its divisors is an integer number (1646568).

Almost surely, 2^65573145 is an apocalyptic number.

It is an amenable number.

65573145 is an abundant number, since it is smaller than the sum of its proper divisors (66152295).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65573145 is a wasteful number, since it uses less digits than its factorization.

65573145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 419 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 65573145 is about 8097.7246804272. The cubic root of 65573145 is about 403.2508930763.

The spelling of 65573145 in words is "sixty-five million, five hundred seventy-three thousand, one hundred forty-five".