148224991 has 2 divisors, whose sum is σ = 148224992. Its totient is φ = 148224990.

The previous prime is 148224911. The next prime is 148225019. The reversal of 148224991 is 199422841.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 148224991 - 2⁷ = 148224863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148224911) 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 as a sum of consecutive naturals, namely, 74112495 + 74112496.

It is an arithmetic number, because the mean of its divisors is an integer number (74112496).

Almost surely, 2^148224991 is an apocalyptic number.

148224991 is a deficient number, since it is larger than the sum of its proper divisors (1).

148224991 is an equidigital number, since it uses as much as digits as its factorization.

148224991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 148224991 is about 12174.7686220314. The cubic root of 148224991 is about 529.2251534944.

It can be divided in two parts, 14822499 and 1, that added together give a square (14822500 = 3850²).

The spelling of 148224991 in words is "one hundred forty-eight million, two hundred twenty-four thousand, nine hundred ninety-one".