146597021 has 2 divisors, whose sum is σ = 146597022. Its totient is φ = 146597020.

The previous prime is 146596999. The next prime is 146597029. The reversal of 146597021 is 120795641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146071396 + 525625 = 12086^2 + 725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146597021 is a prime.

It is a Chen prime.

It is equal to p_8263574 and since 146597021 and 8263574 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146597029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73298510 + 73298511.

It is an arithmetic number, because the mean of its divisors is an integer number (73298511).

Almost surely, 2^146597021 is an apocalyptic number.

It is an amenable number.

146597021 is a deficient number, since it is larger than the sum of its proper divisors (1).

146597021 is an equidigital number, since it uses as much as digits as its factorization.

146597021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 146597021 is about 12107.7256741305. The cubic root of 146597021 is about 527.2805055522.

The spelling of 146597021 in words is "one hundred forty-six million, five hundred ninety-seven thousand, twenty-one".