47061021 has 12 divisors (see below), whose sum is σ = 72992832. Its totient is φ = 26891928.

The previous prime is 47061019. The next prime is 47061023. The reversal of 47061021 is 12016074.

It is an interprime number because it is at equal distance from previous prime (47061019) and next prime (47061023).

It is not a de Polignac number, because 47061021 - 2¹ = 47061019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47061023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159925 + ... + 160218.

It is an arithmetic number, because the mean of its divisors is an integer number (6082736).

Almost surely, 2^47061021 is an apocalyptic number.

It is an amenable number.

47061021 is a deficient number, since it is larger than the sum of its proper divisors (25931811).

47061021 is a wasteful number, since it uses less digits than its factorization.

47061021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320160 (or 320153 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 47061021 is about 6860.1035706467. The cubic root of 47061021 is about 361.0387207388.

Adding to 47061021 its reverse (12016074), we get a palindrome (59077095).

The spelling of 47061021 in words is "forty-seven million, sixty-one thousand, twenty-one".