55067811 has 32 divisors (see below), whose sum is σ = 81709056. Its totient is φ = 32832000.

The previous prime is 55067809. The next prime is 55067869. The reversal of 55067811 is 11876055.

It is not a de Polignac number, because 55067811 - 2¹ = 55067809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55067801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96156 + ... + 96726.

It is an arithmetic number, because the mean of its divisors is an integer number (2553408).

Almost surely, 2^55067811 is an apocalyptic number.

55067811 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55067811 is a deficient number, since it is larger than the sum of its proper divisors (26641245).

55067811 is a wasteful number, since it uses less digits than its factorization.

55067811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 55067811 is about 7420.7688954717. The cubic root of 55067811 is about 380.4514740147.

The spelling of 55067811 in words is "fifty-five million, sixty-seven thousand, eight hundred eleven".