48747981 has 8 divisors (see below), whose sum is σ = 66754144. Its totient is φ = 31620240.

The previous prime is 48747973. The next prime is 48747989. The reversal of 48747981 is 18974784.

It is an interprime number because it is at equal distance from previous prime (48747973) and next prime (48747989).

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

It is not a de Polignac number, because 48747981 - 2³ = 48747973 is a prime.

It is a super-2 number, since 2×48747981² = 4752731303152722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 48747981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48747989) 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, 219475 + ... + 219696.

It is an arithmetic number, because the mean of its divisors is an integer number (8344268).

Almost surely, 2^48747981 is an apocalyptic number.

It is an amenable number.

48747981 is a deficient number, since it is larger than the sum of its proper divisors (18006163).

48747981 is a wasteful number, since it uses less digits than its factorization.

48747981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439211.

The product of its digits is 451584, while the sum is 48.

The square root of 48747981 is about 6981.9754367944. The cubic root of 48747981 is about 365.3021355211.

The spelling of 48747981 in words is "forty-eight million, seven hundred forty-seven thousand, nine hundred eighty-one".