47970851 has 4 divisors (see below), whose sum is σ = 47984832. Its totient is φ = 47956872.

The previous prime is 47970841. The next prime is 47970863. The reversal of 47970851 is 15807974.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47970851 is a prime.

It is a super-3 number, since 3×47970851³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47970799 and 47970808.

It is not an unprimeable number, because it can be changed into a prime (47970841) 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, 2081 + ... + 10013.

It is an arithmetic number, because the mean of its divisors is an integer number (11996208).

Almost surely, 2^47970851 is an apocalyptic number.

47970851 is a deficient number, since it is larger than the sum of its proper divisors (13981).

47970851 is an equidigital number, since it uses as much as digits as its factorization.

47970851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13980.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 47970851 is about 6926.0992629329. The cubic root of 47970851 is about 363.3505380475.

The spelling of 47970851 in words is "forty-seven million, nine hundred seventy thousand, eight hundred fifty-one".