145557927 has 24 divisors (see below), whose sum is σ = 229806720. Its totient is φ = 88381440.

The previous prime is 145557911. The next prime is 145557949. The reversal of 145557927 is 729755541.

145557927 is a `hidden beast` number, since 1 + 4 + 5 + 557 + 92 + 7 = 666.

It is not a de Polignac number, because 145557927 - 2⁴ = 145557911 is a prime.

It is a super-2 number, since 2×145557927² = 42374220225074658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145557977) 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, 10602 + ... + 20087.

It is an arithmetic number, because the mean of its divisors is an integer number (9575280).

Almost surely, 2^145557927 is an apocalyptic number.

145557927 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

145557927 is a deficient number, since it is larger than the sum of its proper divisors (84248793).

145557927 is a wasteful number, since it uses less digits than its factorization.

145557927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30743 (or 30740 counting only the distinct ones).

The product of its digits is 441000, while the sum is 45.

The square root of 145557927 is about 12064.7389942758. The cubic root of 145557927 is about 526.0317452059.

The spelling of 145557927 in words is "one hundred forty-five million, five hundred fifty-seven thousand, nine hundred twenty-seven".