145146655 has 4 divisors (see below), whose sum is σ = 174175992. Its totient is φ = 116117320.

The previous prime is 145146641. The next prime is 145146679. The reversal of 145146655 is 556641541.

145146655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556641541 = 2903 ⋅191747.

It is not a de Polignac number, because 145146655 - 2⁹ = 145146143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14514661 + ... + 14514670.

It is an arithmetic number, because the mean of its divisors is an integer number (43543998).

Almost surely, 2^145146655 is an apocalyptic number.

145146655 is a deficient number, since it is larger than the sum of its proper divisors (29029337).

145146655 is an equidigital number, since it uses as much as digits as its factorization.

145146655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29029336.

The product of its digits is 72000, while the sum is 37.

The square root of 145146655 is about 12047.6825572390. The cubic root of 145146655 is about 525.5358459441.

The spelling of 145146655 in words is "one hundred forty-five million, one hundred forty-six thousand, six hundred fifty-five".