47972951 has 4 divisors (see below), whose sum is σ = 51663192. Its totient is φ = 44282712.

The previous prime is 47972941. The next prime is 47972957. The reversal of 47972951 is 15927974.

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

It is a cyclic number.

It is not a de Polignac number, because 47972951 - 2⁶ = 47972887 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 (47972957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1845101 + ... + 1845126.

It is an arithmetic number, because the mean of its divisors is an integer number (12915798).

Almost surely, 2^47972951 is an apocalyptic number.

47972951 is a deficient number, since it is larger than the sum of its proper divisors (3690241).

47972951 is a wasteful number, since it uses less digits than its factorization.

47972951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690240.

The product of its digits is 158760, while the sum is 44.

The square root of 47972951 is about 6926.2508617578. The cubic root of 47972951 is about 363.3558400520.

The spelling of 47972951 in words is "forty-seven million, nine hundred seventy-two thousand, nine hundred fifty-one".