47021101 has 2 divisors, whose sum is σ = 47021102. Its totient is φ = 47021100.

The previous prime is 47021089. The next prime is 47021129. The reversal of 47021101 is 10112074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27573001 + 19448100 = 5251^2 + 4410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47021101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47021501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23510550 + 23510551.

It is an arithmetic number, because the mean of its divisors is an integer number (23510551).

Almost surely, 2^47021101 is an apocalyptic number.

It is an amenable number.

47021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

47021101 is an equidigital number, since it uses as much as digits as its factorization.

47021101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 47021101 is about 6857.1933763020. The cubic root of 47021101 is about 360.9366069117.

Adding to 47021101 its reverse (10112074), we get a palindrome (57133175).

The spelling of 47021101 in words is "forty-seven million, twenty-one thousand, one hundred one".