145456555 has 4 divisors (see below), whose sum is σ = 174547872. Its totient is φ = 116365240.

The previous prime is 145456537. The next prime is 145456567. The reversal of 145456555 is 555654541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555654541 = 13 ⋅42742657.

It is not a de Polignac number, because 145456555 - 2⁵ = 145456523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14545651 + ... + 14545660.

It is an arithmetic number, because the mean of its divisors is an integer number (43636968).

Almost surely, 2^145456555 is an apocalyptic number.

145456555 is a deficient number, since it is larger than the sum of its proper divisors (29091317).

145456555 is an equidigital number, since it uses as much as digits as its factorization.

145456555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29091316.

The product of its digits is 300000, while the sum is 40.

The square root of 145456555 is about 12060.5370941762. The cubic root of 145456555 is about 525.9096007668.

The spelling of 145456555 in words is "one hundred forty-five million, four hundred fifty-six thousand, five hundred fifty-five".