148154561 has 2 divisors, whose sum is σ = 148154562. Its totient is φ = 148154560.

The previous prime is 148154519. The next prime is 148154563. The reversal of 148154561 is 165451841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76667536 + 71487025 = 8756^2 + 8455^2 .

It is a cyclic number.

It is not a de Polignac number, because 148154561 - 2¹⁸ = 147892417 is a prime.

Together with 148154563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (148154563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74077280 + 74077281.

It is an arithmetic number, because the mean of its divisors is an integer number (74077281).

Almost surely, 2^148154561 is an apocalyptic number.

It is an amenable number.

148154561 is a deficient number, since it is larger than the sum of its proper divisors (1).

148154561 is an equidigital number, since it uses as much as digits as its factorization.

148154561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 35.

The square root of 148154561 is about 12171.8758209242. The cubic root of 148154561 is about 529.1413187051.

The spelling of 148154561 in words is "one hundred forty-eight million, one hundred fifty-four thousand, five hundred sixty-one".