55304557 has 8 divisors (see below), whose sum is σ = 68951232. Its totient is φ = 43094400.

The previous prime is 55304549. The next prime is 55304567. The reversal of 55304557 is 75540355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55304557 - 2³ = 55304549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55304567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359044 + ... + 359197.

It is an arithmetic number, because the mean of its divisors is an integer number (8618904).

Almost surely, 2^55304557 is an apocalyptic number.

It is an amenable number.

55304557 is a deficient number, since it is larger than the sum of its proper divisors (13646675).

55304557 is a wasteful number, since it uses less digits than its factorization.

55304557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718259.

The product of its (nonzero) digits is 52500, while the sum is 34.

The square root of 55304557 is about 7436.7033691011. The cubic root of 55304557 is about 380.9959033552.

The spelling of 55304557 in words is "fifty-five million, three hundred four thousand, five hundred fifty-seven".