151538917 has 2 divisors, whose sum is σ = 151538918. Its totient is φ = 151538916.

The previous prime is 151538909. The next prime is 151538957. The reversal of 151538917 is 719835151.

It is an a-pointer prime, because the next prime (151538957) can be obtained adding 151538917 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137030436 + 14508481 = 11706^2 + 3809^2 .

It is a cyclic number.

It is not a de Polignac number, because 151538917 - 2³ = 151538909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 151538917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151538957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75769458 + 75769459.

It is an arithmetic number, because the mean of its divisors is an integer number (75769459).

Almost surely, 2^151538917 is an apocalyptic number.

It is an amenable number.

151538917 is a deficient number, since it is larger than the sum of its proper divisors (1).

151538917 is an equidigital number, since it uses as much as digits as its factorization.

151538917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 40.

The square root of 151538917 is about 12310.1144186397. The cubic root of 151538917 is about 533.1401539516.

The spelling of 151538917 in words is "one hundred fifty-one million, five hundred thirty-eight thousand, nine hundred seventeen".