47422281 has 16 divisors (see below), whose sum is σ = 66866688. Its totient is φ = 29846400.

The previous prime is 47422267. The next prime is 47422283. The reversal of 47422281 is 18222474.

It is not a de Polignac number, because 47422281 - 2⁶ = 47422217 is a prime.

It is a super-2 number, since 2×47422281² = 4497745470485922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47422283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2406 + ... + 10031.

It is an arithmetic number, because the mean of its divisors is an integer number (4179168).

Almost surely, 2^47422281 is an apocalyptic number.

47422281 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

47422281 is a deficient number, since it is larger than the sum of its proper divisors (19444407).

47422281 is a wasteful number, since it uses less digits than its factorization.

47422281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12512.

The product of its digits is 7168, while the sum is 30.

The square root of 47422281 is about 6886.3837389446. The cubic root of 47422281 is about 361.9601947421.

The spelling of 47422281 in words is "forty-seven million, four hundred twenty-two thousand, two hundred eighty-one".