64501445 has 4 divisors (see below), whose sum is σ = 77401740. Its totient is φ = 51601152.

The previous prime is 64501429. The next prime is 64501457. The reversal of 64501445 is 54410546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54410546 = 2 ⋅27205273.

It can be written as a sum of positive squares in 2 ways, for example, as 7695076 + 56806369 = 2774^2 + 7537^2 .

It is a cyclic number.

It is not a de Polignac number, because 64501445 - 2⁴ = 64501429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6450140 + ... + 6450149.

It is an arithmetic number, because the mean of its divisors is an integer number (19350435).

Almost surely, 2^64501445 is an apocalyptic number.

It is an amenable number.

64501445 is a deficient number, since it is larger than the sum of its proper divisors (12900295).

64501445 is a wasteful number, since it uses less digits than its factorization.

64501445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12900294.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 64501445 is about 8031.2791633712. The cubic root of 64501445 is about 401.0419605223.

It can be divided in two parts, 64501 and 445, that added together give a palindrome (64946).

The spelling of 64501445 in words is "sixty-four million, five hundred one thousand, four hundred forty-five".