157745773 has 8 divisors (see below), whose sum is σ = 161084088. Its totient is φ = 154439424.

The previous prime is 157745767. The next prime is 157745789. The reversal of 157745773 is 377547751.

It can be written as a sum of positive squares in 4 ways, for example, as 38105929 + 119639844 = 6173^2 + 10938^2 .

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-157745773 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 (157746773) 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 7 ways as a sum of consecutive naturals, for example, 2115 + ... + 17887.

It is an arithmetic number, because the mean of its divisors is an integer number (20135511).

Almost surely, 2^157745773 is an apocalyptic number.

It is an amenable number.

157745773 is a deficient number, since it is larger than the sum of its proper divisors (3338315).

157745773 is a wasteful number, since it uses less digits than its factorization.

157745773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15983.

The product of its digits is 720300, while the sum is 46.

The square root of 157745773 is about 12559.6884117402. The cubic root of 157745773 is about 540.3219079727.

It can be divided in two parts, 1577457 and 73, that multiplied together give a square (115154361 = 10731²).

The spelling of 157745773 in words is "one hundred fifty-seven million, seven hundred forty-five thousand, seven hundred seventy-three".