146561533 has 4 divisors (see below), whose sum is σ = 146605408. Its totient is φ = 146517660.

The previous prime is 146561491. The next prime is 146561561. The reversal of 146561533 is 335165641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335165641 = 157 ⋅2134813.

It is a cyclic number.

It is not a de Polignac number, because 146561533 - 2⁹ = 146561021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146561333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16473 + ... + 23758.

It is an arithmetic number, because the mean of its divisors is an integer number (36651352).

Almost surely, 2^146561533 is an apocalyptic number.

It is an amenable number.

146561533 is a deficient number, since it is larger than the sum of its proper divisors (43875).

146561533 is an equidigital number, since it uses as much as digits as its factorization.

146561533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43874.

The product of its digits is 32400, while the sum is 34.

The square root of 146561533 is about 12106.2600748538. The cubic root of 146561533 is about 527.2379543448.

The spelling of 146561533 in words is "one hundred forty-six million, five hundred sixty-one thousand, five hundred thirty-three".