147944551 has 2 divisors, whose sum is σ = 147944552. Its totient is φ = 147944550.

The previous prime is 147944479. The next prime is 147944567. The reversal of 147944551 is 155449741.

It is a happy number.

147944551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (155449741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147944551 - 2⁹ = 147944039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147944651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73972275 + 73972276.

It is an arithmetic number, because the mean of its divisors is an integer number (73972276).

Almost surely, 2^147944551 is an apocalyptic number.

147944551 is a deficient number, since it is larger than the sum of its proper divisors (1).

147944551 is an equidigital number, since it uses as much as digits as its factorization.

147944551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 40.

The square root of 147944551 is about 12163.2459072404. The cubic root of 147944551 is about 528.8911801206.

The spelling of 147944551 in words is "one hundred forty-seven million, nine hundred forty-four thousand, five hundred fifty-one".