64550442 has 16 divisors (see below), whose sum is σ = 140837472. Its totient is φ = 19560720.

The previous prime is 64550363. The next prime is 64550461. The reversal of 64550442 is 24405546.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488953 + ... + 489084.

It is an arithmetic number, because the mean of its divisors is an integer number (8802342).

Almost surely, 2^64550442 is an apocalyptic number.

64550442 is an abundant number, since it is smaller than the sum of its proper divisors (76287030).

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

64550442 is a wasteful number, since it uses less digits than its factorization.

64550442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978053.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 64550442 is about 8034.3289701132. The cubic root of 64550442 is about 401.1434821730.

Adding to 64550442 its reverse (24405546), we get a palindrome (88955988).

Subtracting from 64550442 its reverse (24405546), we obtain a square (40144896 = 6336²).

It can be divided in two parts, 645504 and 42, that added together give a palindrome (645546).

The spelling of 64550442 in words is "sixty-four million, five hundred fifty thousand, four hundred forty-two".