53120644 has 6 divisors (see below), whose sum is σ = 92961134. Its totient is φ = 26560320.

The previous prime is 53120633. The next prime is 53120653. The reversal of 53120644 is 44602135.

It can be written as a sum of positive squares in only one way, i.e., 51265600 + 1855044 = 7160^2 + 1362^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6640077 + ... + 6640084.

Almost surely, 2^53120644 is an apocalyptic number.

It is an amenable number.

53120644 is a deficient number, since it is larger than the sum of its proper divisors (39840490).

53120644 is a wasteful number, since it uses less digits than its factorization.

53120644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13280165 (or 13280163 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 53120644 is about 7288.3910432962. The cubic root of 53120644 is about 375.9133741137.

Adding to 53120644 its reverse (44602135), we get a palindrome (97722779).

The spelling of 53120644 in words is "fifty-three million, one hundred twenty thousand, six hundred forty-four".