64240550 has 48 divisors (see below), whose sum is σ = 131134464. Its totient is φ = 23220000.

The previous prime is 64240549. The next prime is 64240559. The reversal of 64240550 is 5504246.

It is a super-3 number, since 3×64240550³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64240559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148835 + ... + 149265.

It is an arithmetic number, because the mean of its divisors is an integer number (2731968).

Almost surely, 2^64240550 is an apocalyptic number.

64240550 is an abundant number, since it is smaller than the sum of its proper divisors (66893914).

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

64240550 is a wasteful number, since it uses less digits than its factorization.

64240550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 64240550 is about 8015.0202744597. The cubic root of 64240550 is about 400.5005192732.

Adding to 64240550 its reverse (5504246), we get a palindrome (69744796).

The spelling of 64240550 in words is "sixty-four million, two hundred forty thousand, five hundred fifty".