47971519 has 4 divisors (see below), whose sum is σ = 48876696. Its totient is φ = 47066344.

The previous prime is 47971493. The next prime is 47971549. The reversal of 47971519 is 91517974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91517974 = 2 ⋅45758987.

It is a cyclic number.

It is not a de Polignac number, because 47971519 - 2¹³ = 47963327 is a prime.

It is a super-2 number, since 2×47971519² = 4602533270334722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47971549) 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, 452509 + ... + 452614.

It is an arithmetic number, because the mean of its divisors is an integer number (12219174).

Almost surely, 2^47971519 is an apocalyptic number.

47971519 is a deficient number, since it is larger than the sum of its proper divisors (905177).

47971519 is an equidigital number, since it uses as much as digits as its factorization.

47971519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905176.

The product of its digits is 79380, while the sum is 43.

The square root of 47971519 is about 6926.1474861571. The cubic root of 47971519 is about 363.3522246067.

The spelling of 47971519 in words is "forty-seven million, nine hundred seventy-one thousand, five hundred nineteen".