48751987 has 4 divisors (see below), whose sum is σ = 50433120. Its totient is φ = 47070856.

The previous prime is 48751961. The next prime is 48751991. The reversal of 48751987 is 78915784.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48751987 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 48751987.

It is not an unprimeable number, because it can be changed into a prime (48751487) 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 3 ways as a sum of consecutive naturals, for example, 840523 + ... + 840580.

It is an arithmetic number, because the mean of its divisors is an integer number (12608280).

Almost surely, 2^48751987 is an apocalyptic number.

48751987 is a deficient number, since it is larger than the sum of its proper divisors (1681133).

48751987 is a wasteful number, since it uses less digits than its factorization.

48751987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681132.

The product of its digits is 564480, while the sum is 49.

The square root of 48751987 is about 6982.2623124601. The cubic root of 48751987 is about 365.3121418177.

The spelling of 48751987 in words is "forty-eight million, seven hundred fifty-one thousand, nine hundred eighty-seven".