147550121 has 2 divisors, whose sum is σ = 147550122. Its totient is φ = 147550120.

The previous prime is 147550079. The next prime is 147550133. The reversal of 147550121 is 121055741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92256025 + 55294096 = 9605^2 + 7436^2 .

It is an emirp because it is prime and its reverse (121055741) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147550121 is a prime.

It is a super-2 number, since 2×147550121² = 43542076414229282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (147550171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73775060 + 73775061.

It is an arithmetic number, because the mean of its divisors is an integer number (73775061).

Almost surely, 2^147550121 is an apocalyptic number.

It is an amenable number.

147550121 is a deficient number, since it is larger than the sum of its proper divisors (1).

147550121 is an equidigital number, since it uses as much as digits as its factorization.

147550121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 147550121 is about 12147.0210751443. The cubic root of 147550121 is about 528.4207421272.

The spelling of 147550121 in words is "one hundred forty-seven million, five hundred fifty thousand, one hundred twenty-one".