47950781 has 2 divisors, whose sum is σ = 47950782. Its totient is φ = 47950780.

The previous prime is 47950757. The next prime is 47950787. The reversal of 47950781 is 18705974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46648900 + 1301881 = 6830^2 + 1141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47950781 is a prime.

It is a super-2 number, since 2×47950781² = 4598554797019922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47950787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23975390 + 23975391.

It is an arithmetic number, because the mean of its divisors is an integer number (23975391).

Almost surely, 2^47950781 is an apocalyptic number.

It is an amenable number.

47950781 is a deficient number, since it is larger than the sum of its proper divisors (1).

47950781 is an equidigital number, since it uses as much as digits as its factorization.

47950781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 47950781 is about 6924.6502438751. The cubic root of 47950781 is about 363.2998582258.

The spelling of 47950781 in words is "forty-seven million, nine hundred fifty thousand, seven hundred eighty-one".