55611806 has 4 divisors (see below), whose sum is σ = 83417712. Its totient is φ = 27805902.

The previous prime is 55611797. The next prime is 55611827. The reversal of 55611806 is 60811655.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13902950 + ... + 13902953.

It is an arithmetic number, because the mean of its divisors is an integer number (20854428).

Almost surely, 2^55611806 is an apocalyptic number.

55611806 is a deficient number, since it is larger than the sum of its proper divisors (27805906).

55611806 is a wasteful number, since it uses less digits than its factorization.

55611806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27805905.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 55611806 is about 7457.3323648608. The cubic root of 55611806 is about 381.7001521146.

The spelling of 55611806 in words is "fifty-five million, six hundred eleven thousand, eight hundred six".