64055545 has 4 divisors (see below), whose sum is σ = 76866660. Its totient is φ = 51244432.

The previous prime is 64055543. The next prime is 64055569. The reversal of 64055545 is 54555046.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49857721 + 14197824 = 7061^2 + 3768^2 .

It is a cyclic number.

It is not a de Polignac number, because 64055545 - 2¹ = 64055543 is a prime.

It is a super-2 number, since 2×64055545² = 8206225690494050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64055545.

It is not an unprimeable number, because it can be changed into a prime (64055543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6405550 + ... + 6405559.

It is an arithmetic number, because the mean of its divisors is an integer number (19216665).

Almost surely, 2^64055545 is an apocalyptic number.

It is an amenable number.

64055545 is a deficient number, since it is larger than the sum of its proper divisors (12811115).

64055545 is a wasteful number, since it uses less digits than its factorization.

64055545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12811114.

The product of its (nonzero) digits is 60000, while the sum is 34.

The square root of 64055545 is about 8003.4708095925. The cubic root of 64055545 is about 400.1156852891.

The spelling of 64055545 in words is "sixty-four million, fifty-five thousand, five hundred forty-five".