157673 has 4 divisors (see below), whose sum is σ = 163140. Its totient is φ = 152208.

The previous prime is 157669. The next prime is 157679. The reversal of 157673 is 376751.

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 85849 + 71824 = 293^2 + 268^2 .

It is a cyclic number.

It is not a de Polignac number, because 157673 - 2² = 157669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 5437 = 157673 / (1 + 5 + 7 + 6 + 7 + 3).

It is a Duffinian number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (157679) 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 3 ways as a sum of consecutive naturals, for example, 2690 + ... + 2747.

It is an arithmetic number, because the mean of its divisors is an integer number (40785).

2¹⁵⁷⁶⁷³ is an apocalyptic number.

It is an amenable number.

157673 is a deficient number, since it is larger than the sum of its proper divisors (5467).

157673 is an equidigital number, since it uses as much as digits as its factorization.

157673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5466.

The product of its digits is 4410, while the sum is 29.

The square root of 157673 is about 397.0805963529. The cubic root of 157673 is about 54.0238806128.

The spelling of 157673 in words is "one hundred fifty-seven thousand, six hundred seventy-three".