47452381 has 8 divisors (see below), whose sum is σ = 51223680. Its totient is φ = 43823472.

The previous prime is 47452373. The next prime is 47452399. The reversal of 47452381 is 18325474.

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

It is a cyclic number.

It is not a de Polignac number, because 47452381 - 2³ = 47452373 is a prime.

It is a super-2 number, since 2×47452381² = 4503456925138322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47422381) 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, 34905 + ... + 36238.

It is an arithmetic number, because the mean of its divisors is an integer number (6402960).

Almost surely, 2^47452381 is an apocalyptic number.

It is an amenable number.

47452381 is a deficient number, since it is larger than the sum of its proper divisors (3771299).

47452381 is a wasteful number, since it uses less digits than its factorization.

47452381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71195.

The product of its digits is 26880, while the sum is 34.

The square root of 47452381 is about 6888.5688644304. The cubic root of 47452381 is about 362.0367600003.

The spelling of 47452381 in words is "forty-seven million, four hundred fifty-two thousand, three hundred eighty-one".