47975145 has 16 divisors (see below), whose sum is σ = 77058432. Its totient is φ = 25487360.

The previous prime is 47975131. The next prime is 47975153. The reversal of 47975145 is 54157974.

It is a happy number.

47975145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47975145 - 2⁴ = 47975129 is a prime.

It is a super-2 number, since 2×47975145² = 4603229075542050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47975097 and 47975106.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2136 + ... + 10025.

It is an arithmetic number, because the mean of its divisors is an integer number (4816152).

Almost surely, 2^47975145 is an apocalyptic number.

It is an amenable number.

47975145 is a deficient number, since it is larger than the sum of its proper divisors (29083287).

47975145 is a wasteful number, since it uses less digits than its factorization.

47975145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12432.

The product of its digits is 176400, while the sum is 42.

The square root of 47975145 is about 6926.4092428906. The cubic root of 47975145 is about 363.3613792190.

The spelling of 47975145 in words is "forty-seven million, nine hundred seventy-five thousand, one hundred forty-five".