55312145 has 16 divisors (see below), whose sum is σ = 76612608. Its totient is φ = 37550400.

The previous prime is 55312129. The next prime is 55312181. The reversal of 55312145 is 54121355.

It is not a de Polignac number, because 55312145 - 2⁴ = 55312129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4289 + ... + 11358.

It is an arithmetic number, because the mean of its divisors is an integer number (4788288).

Almost surely, 2^55312145 is an apocalyptic number.

It is an amenable number.

55312145 is a deficient number, since it is larger than the sum of its proper divisors (21300463).

55312145 is a wasteful number, since it uses less digits than its factorization.

55312145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15760.

The product of its digits is 3000, while the sum is 26.

The square root of 55312145 is about 7437.2135238946. The cubic root of 55312145 is about 381.0133272642.

The spelling of 55312145 in words is "fifty-five million, three hundred twelve thousand, one hundred forty-five".