55049999 has 12 divisors (see below), whose sum is σ = 57067032. Its totient is φ = 53086800.

The previous prime is 55049983. The next prime is 55050001. The reversal of 55049999 is 99994055.

It is not a de Polignac number, because 55049999 - 2⁴ = 55049983 is a prime.

It is a Duffinian number.

55049999 is a modest number, since divided by 9999 gives 5504 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55049909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 420164 + ... + 420294.

It is an arithmetic number, because the mean of its divisors is an integer number (4755586).

Almost surely, 2^55049999 is an apocalyptic number.

55049999 is a deficient number, since it is larger than the sum of its proper divisors (2017033).

55049999 is an equidigital number, since it uses as much as digits as its factorization.

55049999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 656100, while the sum is 50.

The square root of 55049999 is about 7419.5686532305. The cubic root of 55049999 is about 380.4104498525.

The spelling of 55049999 in words is "fifty-five million, forty-nine thousand, nine hundred ninety-nine".