55403512 has 8 divisors (see below), whose sum is σ = 103881600. Its totient is φ = 27701752.

The previous prime is 55403507. The next prime is 55403531. The reversal of 55403512 is 21530455.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3462712 + ... + 3462727.

It is an arithmetic number, because the mean of its divisors is an integer number (12985200).

Almost surely, 2^55403512 is an apocalyptic number.

It is an amenable number.

55403512 is a deficient number, since it is larger than the sum of its proper divisors (48478088).

55403512 is a wasteful number, since it uses less digits than its factorization.

55403512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925445 (or 6925441 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 55403512 is about 7443.3535452778. The cubic root of 55403512 is about 381.2230033020.

Adding to 55403512 its reverse (21530455), we get a palindrome (76933967).

The spelling of 55403512 in words is "fifty-five million, four hundred three thousand, five hundred twelve".