55266005 has 4 divisors (see below), whose sum is σ = 66319212. Its totient is φ = 44212800.

The previous prime is 55265999. The next prime is 55266007. The reversal of 55266005 is 50066255.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43335889 + 11930116 = 6583^2 + 3454^2 .

It is a de Polignac number, because none of the positive numbers 2^k-55266005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55266007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5526596 + ... + 5526605.

It is an arithmetic number, because the mean of its divisors is an integer number (16579803).

Almost surely, 2^55266005 is an apocalyptic number.

It is an amenable number.

55266005 is a deficient number, since it is larger than the sum of its proper divisors (11053207).

55266005 is a wasteful number, since it uses less digits than its factorization.

55266005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11053206.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 55266005 is about 7434.1109085082. The cubic root of 55266005 is about 380.9073538808.

The spelling of 55266005 in words is "fifty-five million, two hundred sixty-six thousand, five".