145345761 has 24 divisors (see below), whose sum is σ = 233910144. Its totient is φ = 86211360.

The previous prime is 145345751. The next prime is 145345771. The reversal of 145345761 is 167543541.

145345761 is a `hidden beast` number, since 14 + 534 + 57 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (145345751) and next prime (145345771).

It is not a de Polignac number, because 145345761 - 2⁵ = 145345729 is a prime.

It is a super-2 number, since 2×145345761² = 42250780481338242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145345721) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 10966 + ... + 20271.

It is an arithmetic number, because the mean of its divisors is an integer number (9746256).

Almost surely, 2^145345761 is an apocalyptic number.

145345761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145345761 is a deficient number, since it is larger than the sum of its proper divisors (88564383).

145345761 is a wasteful number, since it uses less digits than its factorization.

145345761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31301 (or 31298 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 145345761 is about 12055.9429743177. The cubic root of 145345761 is about 525.7760387130.

The spelling of 145345761 in words is "one hundred forty-five million, three hundred forty-five thousand, seven hundred sixty-one".