55572005 has 4 divisors (see below), whose sum is σ = 66686412. Its totient is φ = 44457600.

The previous prime is 55571993. The next prime is 55572007. The reversal of 55572005 is 50027555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50027555 = 5 ⋅10005511.

It can be written as a sum of positive squares in 2 ways, for example, as 28718881 + 26853124 = 5359^2 + 5182^2 .

It is not a de Polignac number, because 55572005 - 2¹² = 55567909 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 (55572007) 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, 5557196 + ... + 5557205.

It is an arithmetic number, because the mean of its divisors is an integer number (16671603).

Almost surely, 2^55572005 is an apocalyptic number.

It is an amenable number.

55572005 is a deficient number, since it is larger than the sum of its proper divisors (11114407).

55572005 is a wasteful number, since it uses less digits than its factorization.

55572005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11114406.

The product of its (nonzero) digits is 8750, while the sum is 29.

The square root of 55572005 is about 7454.6633056094. The cubic root of 55572005 is about 381.6090702948.

The spelling of 55572005 in words is "fifty-five million, five hundred seventy-two thousand, five".