154101049 has 2 divisors, whose sum is σ = 154101050.
Its totient is φ = 154101048.
The previous prime is 154101019. The next prime is 154101061. The reversal of 154101049 is 940101451.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 132987024 + 21114025 = 11532^2 + 4595^2
It is an emirp because it is prime and its reverse (940101451) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 154101049 - 213 = 154092857 is a prime.
It is not a weakly prime, because it can be changed into another prime (154101019) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77050524 + 77050525.
It is an arithmetic number, because the mean of its divisors is an integer number (77050525).
Almost surely, 2154101049 is an apocalyptic number.
It is an amenable number.
154101049 is a deficient number, since it is larger than the sum of its proper divisors (1).
154101049 is an equidigital number, since it uses as much as digits as its factorization.
154101049 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 720, while the sum is 25.
The square root of 154101049 is about 12413.7443585729.
The cubic root of 154101049 is about 536.1280521726.
The spelling of 154101049 in words is "one hundred fifty-four million, one hundred one thousand, forty-nine".