147890557 has 2 divisors, whose sum is σ = 147890558. Its totient is φ = 147890556.

The previous prime is 147890543. The next prime is 147890597. The reversal of 147890557 is 755098741.

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., 80174116 + 67716441 = 8954^2 + 8229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147890557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147890597) 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, 73945278 + 73945279.

It is an arithmetic number, because the mean of its divisors is an integer number (73945279).

Almost surely, 2^147890557 is an apocalyptic number.

It is an amenable number.

147890557 is a deficient number, since it is larger than the sum of its proper divisors (1).

147890557 is an equidigital number, since it uses as much as digits as its factorization.

147890557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 46.

The square root of 147890557 is about 12161.0261491373. The cubic root of 147890557 is about 528.8268307299.

The spelling of 147890557 in words is "one hundred forty-seven million, eight hundred ninety thousand, five hundred fifty-seven".