145123755 has 32 divisors (see below), whose sum is σ = 265843200. Its totient is φ = 66223872.

The previous prime is 145123709. The next prime is 145123763. The reversal of 145123755 is 557321541.

145123755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145123755 - 2⁸ = 145123499 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89391 + ... + 90999.

It is an arithmetic number, because the mean of its divisors is an integer number (8307600).

Almost surely, 2^145123755 is an apocalyptic number.

145123755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145123755 is a deficient number, since it is larger than the sum of its proper divisors (120719445).

145123755 is a wasteful number, since it uses less digits than its factorization.

145123755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483.

The product of its digits is 21000, while the sum is 33.

The square root of 145123755 is about 12046.7321295030. The cubic root of 145123755 is about 525.5082063042.

The spelling of 145123755 in words is "one hundred forty-five million, one hundred twenty-three thousand, seven hundred fifty-five".