146557 has 8 divisors (see below), whose sum is σ = 160056. Its totient is φ = 133632.

The previous prime is 146543. The next prime is 146563. The reversal of 146557 is 755641.

It can be written as a sum of positive squares in 4 ways, for example, as 47961 + 98596 = 219^2 + 314^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (20007).

2¹⁴⁶⁵⁵⁷ is an apocalyptic number.

146557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

146557 is a deficient number, since it is larger than the sum of its proper divisors (13499).

146557 is a wasteful number, since it uses less digits than its factorization.

146557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287.

The product of its digits is 4200, while the sum is 28.

The square root of 146557 is about 382.8276374558. The cubic root of 146557 is about 52.7232518643.

It can be divided in two parts, 146 and 557, that added together give a triangular number (703 = T₃₇).

The spelling of 146557 in words is "one hundred forty-six thousand, five hundred fifty-seven".