55049997 has 16 divisors (see below), whose sum is σ = 74255040. Its totient is φ = 36275712.

The previous prime is 55049983. The next prime is 55050001. The reversal of 55049997 is 79994055.

It is not a de Polignac number, because 55049997 - 2¹⁵ = 55017229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55049497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155773 + ... + 156125.

It is an arithmetic number, because the mean of its divisors is an integer number (4640940).

Almost surely, 2^55049997 is an apocalyptic number.

It is an amenable number.

55049997 is a deficient number, since it is larger than the sum of its proper divisors (19205043).

55049997 is a wasteful number, since it uses less digits than its factorization.

55049997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812.

The product of its (nonzero) digits is 510300, while the sum is 48.

The square root of 55049997 is about 7419.5685184517. The cubic root of 55049997 is about 380.4104452456.

The spelling of 55049997 in words is "fifty-five million, forty-nine thousand, nine hundred ninety-seven".