55078145 has 8 divisors (see below), whose sum is σ = 66386304. Its totient is φ = 43867504.

The previous prime is 55078109. The next prime is 55078151. The reversal of 55078145 is 54187055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55078145 - 2⁸ = 55077889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23129 + ... + 25398.

It is an arithmetic number, because the mean of its divisors is an integer number (8298288).

Almost surely, 2^55078145 is an apocalyptic number.

It is an amenable number.

55078145 is a deficient number, since it is larger than the sum of its proper divisors (11308159).

55078145 is a wasteful number, since it uses less digits than its factorization.

55078145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48759.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 55078145 is about 7421.4651518416. The cubic root of 55078145 is about 380.4752709755.

The spelling of 55078145 in words is "fifty-five million, seventy-eight thousand, one hundred forty-five".