349154557 has 2 divisors, whose sum is σ = 349154558. Its totient is φ = 349154556.

The previous prime is 349154549. The next prime is 349154567. The reversal of 349154557 is 755451943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286760356 + 62394201 = 16934^2 + 7899^2 .

It is a cyclic number.

It is not a de Polignac number, because 349154557 - 2³ = 349154549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349154567) 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, 174577278 + 174577279.

It is an arithmetic number, because the mean of its divisors is an integer number (174577279).

Almost surely, 2^349154557 is an apocalyptic number.

It is an amenable number.

349154557 is a deficient number, since it is larger than the sum of its proper divisors (1).

349154557 is an equidigital number, since it uses as much as digits as its factorization.

349154557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378000, while the sum is 43.

The square root of 349154557 is about 18685.6778576534. The cubic root of 349154557 is about 704.1619786172.

The spelling of 349154557 in words is "three hundred forty-nine million, one hundred fifty-four thousand, five hundred fifty-seven".