50978145 has 8 divisors (see below), whose sum is σ = 81565056. Its totient is φ = 27188336.

The previous prime is 50978141. The next prime is 50978149. The reversal of 50978145 is 54187905.

50978145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (50978141) and next prime (50978149).

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 50978145 - 2² = 50978141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50978141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1699257 + ... + 1699286.

It is an arithmetic number, because the mean of its divisors is an integer number (10195632).

Almost surely, 2^50978145 is an apocalyptic number.

It is an amenable number.

50978145 is a deficient number, since it is larger than the sum of its proper divisors (30586911).

50978145 is a wasteful number, since it uses less digits than its factorization.

50978145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398551.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 50978145 is about 7139.8981085167. The cubic root of 50978145 is about 370.7899969838.

The spelling of 50978145 in words is "fifty million, nine hundred seventy-eight thousand, one hundred forty-five".