145023555 has 16 divisors (see below), whose sum is σ = 232396704. Its totient is φ = 77226240.

The previous prime is 145023521. The next prime is 145023587. The reversal of 145023555 is 555320541.

It is a happy number.

It is not a de Polignac number, because 145023555 - 2⁶ = 145023491 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3015 + ... + 17295.

It is an arithmetic number, because the mean of its divisors is an integer number (14524794).

Almost surely, 2^145023555 is an apocalyptic number.

145023555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145023555 is a deficient number, since it is larger than the sum of its proper divisors (87373149).

145023555 is a wasteful number, since it uses less digits than its factorization.

145023555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14966.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 145023555 is about 12042.5726072131. The cubic root of 145023555 is about 525.3872335854.

The spelling of 145023555 in words is "one hundred forty-five million, twenty-three thousand, five hundred fifty-five".