145455555 has 16 divisors (see below), whose sum is σ = 265976064. Its totient is φ = 66493920.

The previous prime is 145455539. The next prime is 145455571. The reversal of 145455555 is 555554541.

It is an interprime number because it is at equal distance from previous prime (145455539) and next prime (145455571).

It is not a de Polignac number, because 145455555 - 2⁴ = 145455539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 692541 + ... + 692750.

It is an arithmetic number, because the mean of its divisors is an integer number (16623504).

Almost surely, 2^145455555 is an apocalyptic number.

145455555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145455555 is a deficient number, since it is larger than the sum of its proper divisors (120520509).

145455555 is a wasteful number, since it uses less digits than its factorization.

145455555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385306.

The product of its digits is 250000, while the sum is 39.

The square root of 145455555 is about 12060.4956365814. The cubic root of 145455555 is about 525.9083955712.

It can be divided in two parts, 14545 and 5555, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 145455555 in words is "one hundred forty-five million, four hundred fifty-five thousand, five hundred fifty-five".