145252555 has 8 divisors (see below), whose sum is σ = 199203552. Its totient is φ = 99601728.

The previous prime is 145252537. The next prime is 145252559. The reversal of 145252555 is 555252541.

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 145252555 - 2⁷ = 145252427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145252555.

It is not an unprimeable number, because it can be changed into a prime (145252559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2075002 + ... + 2075071.

It is an arithmetic number, because the mean of its divisors is an integer number (24900444).

Almost surely, 2^145252555 is an apocalyptic number.

145252555 is a deficient number, since it is larger than the sum of its proper divisors (53950997).

145252555 is an equidigital number, since it uses as much as digits as its factorization.

145252555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150085.

The product of its digits is 50000, while the sum is 34.

The square root of 145252555 is about 12052.0767919890. The cubic root of 145252555 is about 525.6636263979.

The spelling of 145252555 in words is "one hundred forty-five million, two hundred fifty-two thousand, five hundred fifty-five".