145553066 has 4 divisors (see below), whose sum is σ = 218329602. Its totient is φ = 72776532.

The previous prime is 145552991. The next prime is 145553069. The reversal of 145553066 is 660355541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660355541 = 8863 ⋅74507.

It can be written as a sum of positive squares in only one way, i.e., 91604041 + 53949025 = 9571^2 + 7345^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145553069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36388265 + ... + 36388268.

Almost surely, 2^145553066 is an apocalyptic number.

145553066 is a deficient number, since it is larger than the sum of its proper divisors (72776536).

145553066 is an equidigital number, since it uses as much as digits as its factorization.

145553066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72776535.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 145553066 is about 12064.5375377592. The cubic root of 145553066 is about 526.0258894186.

The spelling of 145553066 in words is "one hundred forty-five million, five hundred fifty-three thousand, sixty-six".