145111775 has 24 divisors (see below), whose sum is σ = 187499904. Its totient is φ = 111283200.

The previous prime is 145111727. The next prime is 145111787. The reversal of 145111775 is 577111541.

It is a de Polignac number, because none of the positive numbers 2^k-145111775 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86747 + ... + 88403.

It is an arithmetic number, because the mean of its divisors is an integer number (7812496).

Almost surely, 2^145111775 is an apocalyptic number.

145111775 is a deficient number, since it is larger than the sum of its proper divisors (42388129).

145111775 is a wasteful number, since it uses less digits than its factorization.

145111775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811 (or 1806 counting only the distinct ones).

The product of its digits is 4900, while the sum is 32.

The square root of 145111775 is about 12046.2348889601. The cubic root of 145111775 is about 525.4937456310.

The spelling of 145111775 in words is "one hundred forty-five million, one hundred eleven thousand, seven hundred seventy-five".