145513275 has 24 divisors (see below), whose sum is σ = 240936960. Its totient is φ = 77492640.

The previous prime is 145513231. The next prime is 145513301. The reversal of 145513275 is 572315541.

It is not a de Polignac number, because 145513275 - 2⁶ = 145513211 is a prime.

It is a super-2 number, since 2×145513275² = 42348226402451250, which contains 22 as substring.

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, 81846 + ... + 83604.

It is an arithmetic number, because the mean of its divisors is an integer number (10039040).

Almost surely, 2^145513275 is an apocalyptic number.

145513275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145513275 is a deficient number, since it is larger than the sum of its proper divisors (95423685).

145513275 is a wasteful number, since it uses less digits than its factorization.

145513275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875 (or 2870 counting only the distinct ones).

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

The square root of 145513275 is about 12062.8883357179. Note that the first 3 decimals coincide. The cubic root of 145513275 is about 525.9779504219.

The spelling of 145513275 in words is "one hundred forty-five million, five hundred thirteen thousand, two hundred seventy-five".