55499811 has 16 divisors (see below), whose sum is σ = 75146400. Its totient is φ = 36430848.

The previous prime is 55499771. The next prime is 55499839. The reversal of 55499811 is 11899455.

It is not a de Polignac number, because 55499811 - 2⁷ = 55499683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55499891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77925 + ... + 78633.

It is an arithmetic number, because the mean of its divisors is an integer number (4696650).

Almost surely, 2^55499811 is an apocalyptic number.

55499811 is a deficient number, since it is larger than the sum of its proper divisors (19646589).

55499811 is a wasteful number, since it uses less digits than its factorization.

55499811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078.

The product of its digits is 64800, while the sum is 42.

The square root of 55499811 is about 7449.8195280154. The cubic root of 55499811 is about 381.4437483015.

The spelling of 55499811 in words is "fifty-five million, four hundred ninety-nine thousand, eight hundred eleven".