154352749 has 2 divisors, whose sum is σ = 154352750. Its totient is φ = 154352748.

The previous prime is 154352719. The next prime is 154352767. The reversal of 154352749 is 947253451.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111450249 + 42902500 = 10557^2 + 6550^2 .

It is a cyclic number.

It is not a de Polignac number, because 154352749 - 2⁷ = 154352621 is a prime.

It is a super-2 number, since 2×154352749² = 47649542247714002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154352719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77176374 + 77176375.

It is an arithmetic number, because the mean of its divisors is an integer number (77176375).

Almost surely, 2^154352749 is an apocalyptic number.

It is an amenable number.

154352749 is a deficient number, since it is larger than the sum of its proper divisors (1).

154352749 is an equidigital number, since it uses as much as digits as its factorization.

154352749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 154352749 is about 12423.8781787331. The cubic root of 154352749 is about 536.4197872138.

The spelling of 154352749 in words is "one hundred fifty-four million, three hundred fifty-two thousand, seven hundred forty-nine".