55152005 has 4 divisors (see below), whose sum is σ = 66182412. Its totient is φ = 44121600.

The previous prime is 55152001. The next prime is 55152047. The reversal of 55152005 is 50025155.

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 18258529 + 36893476 = 4273^2 + 6074^2 .

It is not a de Polignac number, because 55152005 - 2² = 55152001 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 (55152001) 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, 5515196 + ... + 5515205.

It is an arithmetic number, because the mean of its divisors is an integer number (16545603).

Almost surely, 2^55152005 is an apocalyptic number.

It is an amenable number.

55152005 is a deficient number, since it is larger than the sum of its proper divisors (11030407).

55152005 is a wasteful number, since it uses less digits than its factorization.

55152005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11030406.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 55152005 is about 7426.4395910827. The cubic root of 55152005 is about 380.6452679333.

The spelling of 55152005 in words is "fifty-five million, one hundred fifty-two thousand, five".