1066354521 has 8 divisors (see below), whose sum is σ = 1434850560. Its totient is φ = 704380752.

The previous prime is 1066354501. The next prime is 1066354547. The reversal of 1066354521 is 1254536601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1066354521 - 2⁵ = 1066354489 is a prime.

It is a super-2 number, since 2×1066354521² = 2274223928914278882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066354501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1630185 + ... + 1630838.

It is an arithmetic number, because the mean of its divisors is an integer number (179356320).

Almost surely, 2^1066354521 is an apocalyptic number.

It is an amenable number.

1066354521 is a deficient number, since it is larger than the sum of its proper divisors (368496039).

1066354521 is a wasteful number, since it uses less digits than its factorization.

1066354521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261135.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1066354521 is about 32655.0841523950. The cubic root of 1066354521 is about 1021.6462333975.

It can be divided in two parts, 106635 and 4521, that added together give a triangular number (111156 = T₄₇₁).

The spelling of 1066354521 in words is "one billion, sixty-six million, three hundred fifty-four thousand, five hundred twenty-one".