146663551 has 2 divisors, whose sum is σ = 146663552. Its totient is φ = 146663550.

The previous prime is 146663521. The next prime is 146663599. The reversal of 146663551 is 155366641.

It is a weak prime.

It is an emirp because it is prime and its reverse (155366641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146663551 - 2⁷ = 146663423 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 146663551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146663521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73331775 + 73331776.

It is an arithmetic number, because the mean of its divisors is an integer number (73331776).

Almost surely, 2^146663551 is an apocalyptic number.

146663551 is a deficient number, since it is larger than the sum of its proper divisors (1).

146663551 is an equidigital number, since it uses as much as digits as its factorization.

146663551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 146663551 is about 12110.4727818529. The cubic root of 146663551 is about 527.3602585748.

The spelling of 146663551 in words is "one hundred forty-six million, six hundred sixty-three thousand, five hundred fifty-one".