149041517 has 2 divisors, whose sum is σ = 149041518. Its totient is φ = 149041516.

The previous prime is 149041511. The next prime is 149041531. The reversal of 149041517 is 715140941.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74978281 + 74063236 = 8659^2 + 8606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149041517 is a prime.

It is a super-2 number, since 2×149041517² = 44426747579322578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149041511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74520758 + 74520759.

It is an arithmetic number, because the mean of its divisors is an integer number (74520759).

Almost surely, 2^149041517 is an apocalyptic number.

It is an amenable number.

149041517 is a deficient number, since it is larger than the sum of its proper divisors (1).

149041517 is an equidigital number, since it uses as much as digits as its factorization.

149041517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 149041517 is about 12208.2560998695. The cubic root of 149041517 is about 530.1951541915.

The spelling of 149041517 in words is "one hundred forty-nine million, forty-one thousand, five hundred seventeen".