55399504 has 10 divisors (see below), whose sum is σ = 107336570. Its totient is φ = 27699744.

The previous prime is 55399489. The next prime is 55399517. The reversal of 55399504 is 40599355.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 53582400 + 1817104 = 7320^2 + 1348^2 .

It is a congruent number.

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, 1731219 + ... + 1731250.

It is an arithmetic number, because the mean of its divisors is an integer number (10733657).

Almost surely, 2^55399504 is an apocalyptic number.

It is an amenable number.

55399504 is a deficient number, since it is larger than the sum of its proper divisors (51937066).

55399504 is a wasteful number, since it uses less digits than its factorization.

55399504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3462477 (or 3462471 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 55399504 is about 7443.0843069255. The cubic root of 55399504 is about 381.2138102708.

The spelling of 55399504 in words is "fifty-five million, three hundred ninety-nine thousand, five hundred four".