145877 has 4 divisors (see below), whose sum is σ = 154476. Its totient is φ = 137280.

The previous prime is 145861. The next prime is 145879. The reversal of 145877 is 778541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39601 + 106276 = 199^2 + 326^2 .

It is a cyclic number.

It is not a de Polignac number, because 145877 - 2⁴ = 145861 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145877.

It is not an unprimeable number, because it can be changed into a prime (145879) 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, 4274 + ... + 4307.

It is an arithmetic number, because the mean of its divisors is an integer number (38619).

2¹⁴⁵⁸⁷⁷ is an apocalyptic number.

145877 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

145877 is a deficient number, since it is larger than the sum of its proper divisors (8599).

145877 is an equidigital number, since it uses as much as digits as its factorization.

145877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8598.

The product of its digits is 7840, while the sum is 32.

The square root of 145877 is about 381.9384767211. The cubic root of 145877 is about 52.6415830632.

The spelling of 145877 in words is "one hundred forty-five thousand, eight hundred seventy-seven".