47145719 has 4 divisors (see below), whose sum is σ = 47177520. Its totient is φ = 47113920.

The previous prime is 47145701. The next prime is 47145727. The reversal of 47145719 is 91754174.

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 47145719 - 2⁸ = 47145463 is a prime.

It is a super-2 number, since 2×47145719² = 4445437640053922, 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 (47145419) 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 3 ways as a sum of consecutive naturals, for example, 13562 + ... + 16679.

It is an arithmetic number, because the mean of its divisors is an integer number (11794380).

Almost surely, 2^47145719 is an apocalyptic number.

47145719 is a deficient number, since it is larger than the sum of its proper divisors (31801).

47145719 is a wasteful number, since it uses less digits than its factorization.

47145719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31800.

The product of its digits is 35280, while the sum is 38.

The square root of 47145719 is about 6866.2740259911. The cubic root of 47145719 is about 361.2551838913.

The spelling of 47145719 in words is "forty-seven million, one hundred forty-five thousand, seven hundred nineteen".