148053721 has 2 divisors, whose sum is σ = 148053722. Its totient is φ = 148053720.

The previous prime is 148053677. The next prime is 148053733. The reversal of 148053721 is 127350841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86211225 + 61842496 = 9285^2 + 7864^2 .

It is an emirp because it is prime and its reverse (127350841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148053721 - 2⁷ = 148053593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (148053781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74026860 + 74026861.

It is an arithmetic number, because the mean of its divisors is an integer number (74026861).

Almost surely, 2^148053721 is an apocalyptic number.

It is an amenable number.

148053721 is a deficient number, since it is larger than the sum of its proper divisors (1).

148053721 is an equidigital number, since it uses as much as digits as its factorization.

148053721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 148053721 is about 12167.7327797745. The cubic root of 148053721 is about 529.0212397803.

The spelling of 148053721 in words is "one hundred forty-eight million, fifty-three thousand, seven hundred twenty-one".