149616517 has 2 divisors, whose sum is σ = 149616518. Its totient is φ = 149616516.

The previous prime is 149616491. The next prime is 149616527. The reversal of 149616517 is 715616941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147889921 + 1726596 = 12161^2 + 1314^2 .

It is a cyclic number.

It is not a de Polignac number, because 149616517 - 2¹¹ = 149614469 is a prime.

It is a super-2 number, since 2×149616517² = 44770204318422578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149616517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149616527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74808258 + 74808259.

It is an arithmetic number, because the mean of its divisors is an integer number (74808259).

Almost surely, 2^149616517 is an apocalyptic number.

It is an amenable number.

149616517 is a deficient number, since it is larger than the sum of its proper divisors (1).

149616517 is an equidigital number, since it uses as much as digits as its factorization.

149616517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 149616517 is about 12231.7830670757. The cubic root of 149616517 is about 530.8761076301.

The spelling of 149616517 in words is "one hundred forty-nine million, six hundred sixteen thousand, five hundred seventeen".