64242545 has 8 divisors (see below), whose sum is σ = 79174824. Its totient is φ = 50004864.

The previous prime is 64242533. The next prime is 64242587. The reversal of 64242545 is 54524246.

64242545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2211169 + 62031376 = 1487^2 + 7876^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64242545 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173444 + ... + 173813.

It is an arithmetic number, because the mean of its divisors is an integer number (9896853).

Almost surely, 2^64242545 is an apocalyptic number.

It is an amenable number.

64242545 is a deficient number, since it is larger than the sum of its proper divisors (14932279).

64242545 is a wasteful number, since it uses less digits than its factorization.

64242545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347299.

The product of its digits is 38400, while the sum is 32.

The square root of 64242545 is about 8015.1447273271. The cubic root of 64242545 is about 400.5046650984.

The spelling of 64242545 in words is "sixty-four million, two hundred forty-two thousand, five hundred forty-five".