648573550 has 48 divisors (see below), whose sum is σ = 1325093760. Its totient is φ = 235081440.

The previous prime is 648573529. The next prime is 648573581. The reversal of 648573550 is 55375846.

648573550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 648573497 and 648573506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7009 + ... + 36691.

It is an arithmetic number, because the mean of its divisors is an integer number (27606120).

Almost surely, 2^648573550 is an apocalyptic number.

648573550 is an abundant number, since it is smaller than the sum of its proper divisors (676520210).

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

648573550 is a wasteful number, since it uses less digits than its factorization.

648573550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29737 (or 29732 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The square root of 648573550 is about 25467.1072169573. The cubic root of 648573550 is about 865.6049762297.

The spelling of 648573550 in words is "six hundred forty-eight million, five hundred seventy-three thousand, five hundred fifty".