49951138 has 4 divisors (see below), whose sum is σ = 74926710. Its totient is φ = 24975568.

The previous prime is 49951093. The next prime is 49951141. The reversal of 49951138 is 83115994.

49951138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 49942489 + 8649 = 7067^2 + 93^2 .

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 49951138.

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 as a sum of consecutive naturals, namely, 12487783 + ... + 12487786.

Almost surely, 2^49951138 is an apocalyptic number.

49951138 is a deficient number, since it is larger than the sum of its proper divisors (24975572).

49951138 is a wasteful number, since it uses less digits than its factorization.

49951138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24975571.

The product of its digits is 38880, while the sum is 40.

The square root of 49951138 is about 7067.6119021916. The cubic root of 49951138 is about 368.2831046532.

The spelling of 49951138 in words is "forty-nine million, nine hundred fifty-one thousand, one hundred thirty-eight".