148252381 has 4 divisors (see below), whose sum is σ = 148513500. Its totient is φ = 147991264.

The previous prime is 148252367. The next prime is 148252399. The reversal of 148252381 is 183252841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183252841 = 251 ⋅730091.

It can be written as a sum of positive squares in 2 ways, for example, as 63059481 + 85192900 = 7941^2 + 9230^2 .

It is a cyclic number.

It is not a de Polignac number, because 148252381 - 2⁹ = 148251869 is a prime.

It is a super-2 number, since 2×148252381² = 43957536944338322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148252301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129706 + ... + 130843.

It is an arithmetic number, because the mean of its divisors is an integer number (37128375).

Almost surely, 2^148252381 is an apocalyptic number.

It is an amenable number.

148252381 is a deficient number, since it is larger than the sum of its proper divisors (261119).

148252381 is an equidigital number, since it uses as much as digits as its factorization.

148252381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261118.

The product of its digits is 15360, while the sum is 34.

The square root of 148252381 is about 12175.8934374443. The cubic root of 148252381 is about 529.2577494017.

The spelling of 148252381 in words is "one hundred forty-eight million, two hundred fifty-two thousand, three hundred eighty-one".