145273075 has 18 divisors (see below), whose sum is σ = 191367836. Its totient is φ = 109376640.

The previous prime is 145273067. The next prime is 145273081. The reversal of 145273075 is 570372541.

It is not a de Polignac number, because 145273075 - 2³ = 145273067 is a prime.

It is a super-2 number, since 2×145273075² = 42208532639911250, which contains 22 as substring.

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 145273075.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2829 + ... + 17278.

Almost surely, 2^145273075 is an apocalyptic number.

145273075 is a deficient number, since it is larger than the sum of its proper divisors (46094761).

145273075 is a wasteful number, since it uses less digits than its factorization.

145273075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20151 (or 20129 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 145273075 is about 12052.9280674863. The cubic root of 145273075 is about 525.6883789394.

The spelling of 145273075 in words is "one hundred forty-five million, two hundred seventy-three thousand, seventy-five".