145421611 has 8 divisors (see below), whose sum is σ = 153236880. Its totient is φ = 137622528.

The previous prime is 145421603. The next prime is 145421623. The reversal of 145421611 is 116124541.

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

It is a cyclic number.

It is not a de Polignac number, because 145421611 - 2³ = 145421603 is a prime.

It is a super-2 number, since 2×145421611² = 42294889891670642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145421681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17355 + ... + 24331.

It is an arithmetic number, because the mean of its divisors is an integer number (19154610).

Almost surely, 2^145421611 is an apocalyptic number.

145421611 is a deficient number, since it is larger than the sum of its proper divisors (7815269).

145421611 is a wasteful number, since it uses less digits than its factorization.

145421611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8093.

The product of its digits is 960, while the sum is 25.

The square root of 145421611 is about 12059.0883154574. The cubic root of 145421611 is about 525.8674831349.

The spelling of 145421611 in words is "one hundred forty-five million, four hundred twenty-one thousand, six hundred eleven".