47981951 has 8 divisors (see below), whose sum is σ = 48820464. Its totient is φ = 47148480.

The previous prime is 47981917. The next prime is 47981957. The reversal of 47981951 is 15918974.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47981951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47981957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21341 + ... + 23481.

It is an arithmetic number, because the mean of its divisors is an integer number (6102558).

Almost surely, 2^47981951 is an apocalyptic number.

47981951 is a deficient number, since it is larger than the sum of its proper divisors (838513).

47981951 is a wasteful number, since it uses less digits than its factorization.

47981951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521.

The product of its digits is 90720, while the sum is 44.

The square root of 47981951 is about 6926.9005334276. The cubic root of 47981951 is about 363.3785611758.

The spelling of 47981951 in words is "forty-seven million, nine hundred eighty-one thousand, nine hundred fifty-one".