47457457 has 2 divisors, whose sum is σ = 47457458. Its totient is φ = 47457456.

The previous prime is 47457439. The next prime is 47457463. The reversal of 47457457 is 75475474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34468641 + 12988816 = 5871^2 + 3604^2 .

It is a cyclic number.

It is not a de Polignac number, because 47457457 - 2¹⁹ = 46933169 is a prime.

It is not a weakly prime, because it can be changed into another prime (47457407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23728728 + 23728729.

It is an arithmetic number, because the mean of its divisors is an integer number (23728729).

Almost surely, 2^47457457 is an apocalyptic number.

It is an amenable number.

47457457 is a deficient number, since it is larger than the sum of its proper divisors (1).

47457457 is an equidigital number, since it uses as much as digits as its factorization.

47457457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 548800, while the sum is 43.

The square root of 47457457 is about 6888.9372910486. The cubic root of 47457457 is about 362.0496686119.

The spelling of 47457457 in words is "forty-seven million, four hundred fifty-seven thousand, four hundred fifty-seven".