145345727 has 4 divisors (see below), whose sum is σ = 145369896. Its totient is φ = 145321560.

The previous prime is 145345721. The next prime is 145345729. The reversal of 145345727 is 727543541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 727543541 = 8291 ⋅87751.

It is a cyclic number.

It is not a de Polignac number, because 145345727 - 2⁸ = 145345471 is a prime.

It is a super-2 number, since 2×145345727² = 42250760714317058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4808 + ... + 17714.

It is an arithmetic number, because the mean of its divisors is an integer number (36342474).

Almost surely, 2^145345727 is an apocalyptic number.

145345727 is a deficient number, since it is larger than the sum of its proper divisors (24169).

145345727 is a wasteful number, since it uses less digits than its factorization.

145345727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24168.

The product of its digits is 117600, while the sum is 38.

The square root of 145345727 is about 12055.9415642247. The cubic root of 145345727 is about 525.7759977156.

The spelling of 145345727 in words is "one hundred forty-five million, three hundred forty-five thousand, seven hundred twenty-seven".