48185381 has 2 divisors, whose sum is σ = 48185382. Its totient is φ = 48185380.

The previous prime is 48185353. The next prime is 48185399. The reversal of 48185381 is 18358184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46036225 + 2149156 = 6785^2 + 1466^2 .

It is a cyclic number.

It is not a de Polignac number, because 48185381 - 2⁶ = 48185317 is a prime.

It is a super-2 number, since 2×48185381² = 4643661884230322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48185351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24092690 + 24092691.

It is an arithmetic number, because the mean of its divisors is an integer number (24092691).

Almost surely, 2^48185381 is an apocalyptic number.

It is an amenable number.

48185381 is a deficient number, since it is larger than the sum of its proper divisors (1).

48185381 is an equidigital number, since it uses as much as digits as its factorization.

48185381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30720, while the sum is 38.

The square root of 48185381 is about 6941.5690589376. The cubic root of 48185381 is about 363.8913781475.

The spelling of 48185381 in words is "forty-eight million, one hundred eighty-five thousand, three hundred eighty-one".