145544641 has 4 divisors (see below), whose sum is σ = 158775984. Its totient is φ = 132313300.

The previous prime is 145544627. The next prime is 145544647. The reversal of 145544641 is 146445541.

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.

It is a cyclic number.

It is not a de Polignac number, because 145544641 - 2⁹ = 145544129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145544597 and 145544606.

It is not an unprimeable number, because it can be changed into a prime (145544647) 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 in 3 ways as a sum of consecutive naturals, for example, 6615655 + ... + 6615676.

It is an arithmetic number, because the mean of its divisors is an integer number (39693996).

Almost surely, 2^145544641 is an apocalyptic number.

145544641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145544641 is a deficient number, since it is larger than the sum of its proper divisors (13231343).

145544641 is a wasteful number, since it uses less digits than its factorization.

145544641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13231342.

The product of its digits is 38400, while the sum is 34.

The square root of 145544641 is about 12064.1883688875. The cubic root of 145544641 is about 526.0157399618.

The spelling of 145544641 in words is "one hundred forty-five million, five hundred forty-four thousand, six hundred forty-one".