48172381 has 2 divisors, whose sum is σ = 48172382. Its totient is φ = 48172380.

The previous prime is 48172367. The next prime is 48172457. The reversal of 48172381 is 18327184.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31696900 + 16475481 = 5630^2 + 4059^2 .

It is a cyclic number.

It is not a de Polignac number, because 48172381 - 2¹⁵ = 48139613 is a prime.

It is a super-2 number, since 2×48172381² = 4641156582418322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48172081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24086190 + 24086191.

It is an arithmetic number, because the mean of its divisors is an integer number (24086191).

Almost surely, 2^48172381 is an apocalyptic number.

It is an amenable number.

48172381 is a deficient number, since it is larger than the sum of its proper divisors (1).

48172381 is an equidigital number, since it uses as much as digits as its factorization.

48172381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 48172381 is about 6940.6326080553. The cubic root of 48172381 is about 363.8586502862.

The spelling of 48172381 in words is "forty-eight million, one hundred seventy-two thousand, three hundred eighty-one".