1445433561 has 48 divisors (see below), whose sum is σ = 2460249792. Its totient is φ = 806198400.

The previous prime is 1445433547. The next prime is 1445433581. The reversal of 1445433561 is 1653345441.

1445433561 is a `hidden beast` number, since 1 + 44 + 54 + 3 + 3 + 561 = 666.

It is not a de Polignac number, because 1445433561 - 2⁵ = 1445433529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1445433541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 478546 + ... + 481556.

It is an arithmetic number, because the mean of its divisors is an integer number (51255204).

Almost surely, 2^1445433561 is an apocalyptic number.

1445433561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1445433561 is a deficient number, since it is larger than the sum of its proper divisors (1014816231).

1445433561 is a wasteful number, since it uses less digits than its factorization.

1445433561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414 (or 3411 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1445433561 is about 38018.8579654887. The cubic root of 1445433561 is about 1130.6617788017.

It can be divided in two parts, 144 and 5433561, that multiplied together give a square (782432784 = 27972²).

The spelling of 1445433561 in words is "one billion, four hundred forty-five million, four hundred thirty-three thousand, five hundred sixty-one".