47457757 has 2 divisors, whose sum is σ = 47457758. Its totient is φ = 47457756.

The previous prime is 47457713. The next prime is 47457769. The reversal of 47457757 is 75775474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26563716 + 20894041 = 5154^2 + 4571^2 .

It is a cyclic number.

It is not a de Polignac number, because 47457757 - 2¹⁵ = 47424989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47457457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23728878 + 23728879.

It is an arithmetic number, because the mean of its divisors is an integer number (23728879).

Almost surely, 2^47457757 is an apocalyptic number.

It is an amenable number.

47457757 is a deficient number, since it is larger than the sum of its proper divisors (1).

47457757 is an equidigital number, since it uses as much as digits as its factorization.

47457757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960400, while the sum is 46.

The square root of 47457757 is about 6888.9590650547. The cubic root of 47457757 is about 362.0504315034.

The spelling of 47457757 in words is "forty-seven million, four hundred fifty-seven thousand, seven hundred fifty-seven".