47356921 has 2 divisors, whose sum is σ = 47356922. Its totient is φ = 47356920.

The previous prime is 47356901. The next prime is 47356957. The reversal of 47356921 is 12965374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45427600 + 1929321 = 6740^2 + 1389^2 .

It is a cyclic number.

It is not a de Polignac number, because 47356921 - 2¹⁵ = 47324153 is a prime.

It is not a weakly prime, because it can be changed into another prime (47356901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23678460 + 23678461.

It is an arithmetic number, because the mean of its divisors is an integer number (23678461).

Almost surely, 2^47356921 is an apocalyptic number.

It is an amenable number.

47356921 is a deficient number, since it is larger than the sum of its proper divisors (1).

47356921 is an equidigital number, since it uses as much as digits as its factorization.

47356921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 47356921 is about 6881.6365059483. The cubic root of 47356921 is about 361.7938271265.

The spelling of 47356921 in words is "forty-seven million, three hundred fifty-six thousand, nine hundred twenty-one".