145550643 has 16 divisors (see below), whose sum is σ = 223829760. Its totient is φ = 82407456.

The previous prime is 145550597. The next prime is 145550707. The reversal of 145550643 is 346055541.

It is not a de Polignac number, because 145550643 - 2²¹ = 143453491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145550843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29505 + ... + 34082.

It is an arithmetic number, because the mean of its divisors is an integer number (13989360).

Almost surely, 2^145550643 is an apocalyptic number.

145550643 is a deficient number, since it is larger than the sum of its proper divisors (78279117).

145550643 is a wasteful number, since it uses less digits than its factorization.

145550643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63706.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 145550643 is about 12064.4371190702. The cubic root of 145550643 is about 526.0229705111.

The spelling of 145550643 in words is "one hundred forty-five million, five hundred fifty thousand, six hundred forty-three".