55405304 has 8 divisors (see below), whose sum is σ = 103884960. Its totient is φ = 27702648.

The previous prime is 55405297. The next prime is 55405313. The reversal of 55405304 is 40350455.

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

It is a super-2 number, since 2×55405304² = 6139495422664832, which contains 22 as substring.

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, 3462824 + ... + 3462839.

It is an arithmetic number, because the mean of its divisors is an integer number (12985620).

Almost surely, 2^55405304 is an apocalyptic number.

It is an amenable number.

55405304 is a deficient number, since it is larger than the sum of its proper divisors (48479656).

55405304 is a wasteful number, since it uses less digits than its factorization.

55405304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925669 (or 6925665 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 55405304 is about 7443.4739201531. The cubic root of 55405304 is about 381.2271134161.

Adding to 55405304 its reverse (40350455), we get a palindrome (95755759).

The spelling of 55405304 in words is "fifty-five million, four hundred five thousand, three hundred four".