48551391 has 12 divisors (see below), whose sum is σ = 80148432. Its totient is φ = 27743616.

The previous prime is 48551381. The next prime is 48551401. The reversal of 48551391 is 19315584.

It is an interprime number because it is at equal distance from previous prime (48551381) and next prime (48551401).

It is not a de Polignac number, because 48551391 - 2⁵ = 48551359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48551341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 385266 + ... + 385391.

It is an arithmetic number, because the mean of its divisors is an integer number (6679036).

Almost surely, 2^48551391 is an apocalyptic number.

48551391 is a deficient number, since it is larger than the sum of its proper divisors (31597041).

48551391 is a wasteful number, since it uses less digits than its factorization.

48551391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770670 (or 770667 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 48551391 is about 6967.8828204843. The cubic root of 48551391 is about 364.8104125822.

The spelling of 48551391 in words is "forty-eight million, five hundred fifty-one thousand, three hundred ninety-one".