48737991 has 8 divisors (see below), whose sum is σ = 66740464. Its totient is φ = 31613760.

The previous prime is 48737959. The next prime is 48737993. The reversal of 48737991 is 19973784.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 48737991 - 2⁵ = 48737959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48737991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48737993) 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 7 ways as a sum of consecutive naturals, for example, 219430 + ... + 219651.

It is an arithmetic number, because the mean of its divisors is an integer number (8342558).

Almost surely, 2^48737991 is an apocalyptic number.

48737991 is a deficient number, since it is larger than the sum of its proper divisors (18002473).

48737991 is a wasteful number, since it uses less digits than its factorization.

48737991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439121.

The product of its digits is 381024, while the sum is 48.

The square root of 48737991 is about 6981.2599865640. The cubic root of 48737991 is about 365.2771798369.

The spelling of 48737991 in words is "forty-eight million, seven hundred thirty-seven thousand, nine hundred ninety-one".