145655555 has 4 divisors (see below), whose sum is σ = 174786672. Its totient is φ = 116524440.

The previous prime is 145655537. The next prime is 145655561. The reversal of 145655555 is 555556541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555556541 = 109 ⋅5096849.

It is not a de Polignac number, because 145655555 - 2¹⁴ = 145639171 is a prime.

It is a Duffinian 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, 14565551 + ... + 14565560.

It is an arithmetic number, because the mean of its divisors is an integer number (43696668).

Almost surely, 2^145655555 is an apocalyptic number.

145655555 is a deficient number, since it is larger than the sum of its proper divisors (29131117).

145655555 is an equidigital number, since it uses as much as digits as its factorization.

145655555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29131116.

The product of its digits is 375000, while the sum is 41.

The square root of 145655555 is about 12068.7843215462. The cubic root of 145655555 is about 526.1493248548.

The spelling of 145655555 in words is "one hundred forty-five million, six hundred fifty-five thousand, five hundred fifty-five".