48145138 has 4 divisors (see below), whose sum is σ = 72217710. Its totient is φ = 24072568.

The previous prime is 48145129. The next prime is 48145151. The reversal of 48145138 is 83154184.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43335889 + 4809249 = 6583^2 + 2193^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12036283 + ... + 12036286.

Almost surely, 2^48145138 is an apocalyptic number.

48145138 is a deficient number, since it is larger than the sum of its proper divisors (24072572).

48145138 is a wasteful number, since it uses less digits than its factorization.

48145138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24072571.

The product of its digits is 15360, while the sum is 34.

The square root of 48145138 is about 6938.6697572373. The cubic root of 48145138 is about 363.7900461730.

The spelling of 48145138 in words is "forty-eight million, one hundred forty-five thousand, one hundred thirty-eight".