148320251 has 4 divisors (see below), whose sum is σ = 156126600. Its totient is φ = 140513904.

The previous prime is 148320241. The next prime is 148320259. The reversal of 148320251 is 152023841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 148320251 - 2²⁶ = 81211387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148320251.

It is not an unprimeable number, because it can be changed into a prime (148320259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3903146 + ... + 3903183.

It is an arithmetic number, because the mean of its divisors is an integer number (39031650).

Almost surely, 2^148320251 is an apocalyptic number.

148320251 is a deficient number, since it is larger than the sum of its proper divisors (7806349).

148320251 is an equidigital number, since it uses as much as digits as its factorization.

148320251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7806348.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 148320251 is about 12178.6801830083. The cubic root of 148320251 is about 529.3385018840.

The spelling of 148320251 in words is "one hundred forty-eight million, three hundred twenty thousand, two hundred fifty-one".