47254781 has 8 divisors (see below), whose sum is σ = 57182400. Its totient is φ = 38121408.

The previous prime is 47254771. The next prime is 47254793. The reversal of 47254781 is 18745274.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47254781 is a prime.

It is a super-2 number, since 2×47254781² = 4466028654715922, 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 (47254741) 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, 198431 + ... + 198668.

It is an arithmetic number, because the mean of its divisors is an integer number (7147800).

Almost surely, 2^47254781 is an apocalyptic number.

It is an amenable number.

47254781 is a deficient number, since it is larger than the sum of its proper divisors (9927619).

47254781 is a wasteful number, since it uses less digits than its factorization.

47254781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397123.

The product of its digits is 62720, while the sum is 38.

The square root of 47254781 is about 6874.2113002147. The cubic root of 47254781 is about 361.5335327496.

The spelling of 47254781 in words is "forty-seven million, two hundred fifty-four thousand, seven hundred eighty-one".