47254621 has 2 divisors, whose sum is σ = 47254622. Its totient is φ = 47254620.

The previous prime is 47254609. The next prime is 47254643. The reversal of 47254621 is 12645274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46389721 + 864900 = 6811^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 47254621 - 2¹¹ = 47252573 is a prime.

It is equal to p_2846047 and since 47254621 and 2846047 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47254651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23627310 + 23627311.

It is an arithmetic number, because the mean of its divisors is an integer number (23627311).

Almost surely, 2^47254621 is an apocalyptic number.

It is an amenable number.

47254621 is a deficient number, since it is larger than the sum of its proper divisors (1).

47254621 is an equidigital number, since it uses as much as digits as its factorization.

47254621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 47254621 is about 6874.1996625062. The cubic root of 47254621 is about 361.5331247103.

Adding to 47254621 its reverse (12645274), we get a palindrome (59899895).

The spelling of 47254621 in words is "forty-seven million, two hundred fifty-four thousand, six hundred twenty-one".