55303000257 has 8 divisors (see below), whose sum is σ = 73860436800. Its totient is φ = 36807115280.

The previous prime is 55303000223. The next prime is 55303000267. The reversal of 55303000257 is 75200030355.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55303000257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55303000267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15385794 + ... + 15389387.

It is an arithmetic number, because the mean of its divisors is an integer number (9232554600).

Almost surely, 2^55303000257 is an apocalyptic number.

It is an amenable number.

55303000257 is a deficient number, since it is larger than the sum of its proper divisors (18557436543).

55303000257 is a wasteful number, since it uses less digits than its factorization.

55303000257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30775783.

The product of its (nonzero) digits is 15750, while the sum is 30.

The spelling of 55303000257 in words is "fifty-five billion, three hundred three million, two hundred fifty-seven", and thus it is an aban number.