55004145 has 64 divisors (see below), whose sum is σ = 107520000. Its totient is φ = 23452416.

The previous prime is 55004101. The next prime is 55004171. The reversal of 55004145 is 54140055.

55004145 = 480² + 481² + ... + 650².

It is not a de Polignac number, because 55004145 - 2¹⁰ = 55003121 is a prime.

It is a plaindrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 157431 + ... + 157779.

It is an arithmetic number, because the mean of its divisors is an integer number (1680000).

Almost surely, 2^55004145 is an apocalyptic number.

It is an amenable number.

55004145 is a deficient number, since it is larger than the sum of its proper divisors (52515855).

55004145 is a wasteful number, since it uses less digits than its factorization.

55004145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 55004145 is about 7416.4779376737. The cubic root of 55004145 is about 380.3047993137.

The spelling of 55004145 in words is "fifty-five million, four thousand, one hundred forty-five".