47158021 has 8 divisors (see below), whose sum is σ = 47692800. Its totient is φ = 46626048.

The previous prime is 47157997. The next prime is 47158043. The reversal of 47158021 is 12085174.

47158021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47158021 - 2⁵ = 47157989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47158421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56610 + ... + 57436.

It is an arithmetic number, because the mean of its divisors is an integer number (5961600).

Almost surely, 2^47158021 is an apocalyptic number.

It is an amenable number.

47158021 is a deficient number, since it is larger than the sum of its proper divisors (534779).

47158021 is a wasteful number, since it uses less digits than its factorization.

47158021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 47158021 is about 6867.1697954834. The cubic root of 47158021 is about 361.2866026138.

The spelling of 47158021 in words is "forty-seven million, one hundred fifty-eight thousand, twenty-one".