48375781 has 2 divisors, whose sum is σ = 48375782. Its totient is φ = 48375780.

The previous prime is 48375763. The next prime is 48375787. The reversal of 48375781 is 18757384.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44435556 + 3940225 = 6666^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 48375781 - 2¹⁵ = 48343013 is a prime.

It is a super-2 number, since 2×48375781² = 4680432374719922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48375787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24187890 + 24187891.

It is an arithmetic number, because the mean of its divisors is an integer number (24187891).

Almost surely, 2^48375781 is an apocalyptic number.

It is an amenable number.

48375781 is a deficient number, since it is larger than the sum of its proper divisors (1).

48375781 is an equidigital number, since it uses as much as digits as its factorization.

48375781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 43.

The square root of 48375781 is about 6955.2700163258. The cubic root of 48375781 is about 364.3700424170.

The spelling of 48375781 in words is "forty-eight million, three hundred seventy-five thousand, seven hundred eighty-one".