653550445 has 4 divisors (see below), whose sum is σ = 784260540. Its totient is φ = 522840352.

The previous prime is 653550439. The next prime is 653550487. The reversal of 653550445 is 544055356.

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 438106761 + 215443684 = 20931^2 + 14678^2 .

It is a cyclic number.

It is not a de Polignac number, because 653550445 - 2³ = 653550437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65355040 + ... + 65355049.

It is an arithmetic number, because the mean of its divisors is an integer number (196065135).

Almost surely, 2^653550445 is an apocalyptic number.

It is an amenable number.

653550445 is a deficient number, since it is larger than the sum of its proper divisors (130710095).

653550445 is a wasteful number, since it uses less digits than its factorization.

653550445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130710094.

The product of its (nonzero) digits is 180000, while the sum is 37.

The square root of 653550445 is about 25564.6326983198. The cubic root of 653550445 is about 867.8134394333.

The spelling of 653550445 in words is "six hundred fifty-three million, five hundred fifty thousand, four hundred forty-five".