157289229 has 8 divisors (see below), whose sum is σ = 233021120. Its totient is φ = 104859468.

The previous prime is 157289207. The next prime is 157289261. The reversal of 157289229 is 922982751.

It is a happy number.

It is not a de Polignac number, because 157289229 - 2⁷ = 157289101 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 (157289299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2912737 + ... + 2912790.

It is an arithmetic number, because the mean of its divisors is an integer number (29127640).

Almost surely, 2^157289229 is an apocalyptic number.

It is an amenable number.

157289229 is a deficient number, since it is larger than the sum of its proper divisors (75731891).

157289229 is an equidigital number, since it uses as much as digits as its factorization.

157289229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5825536 (or 5825530 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 157289229 is about 12541.5002691066. The cubic root of 157289229 is about 539.8001420896.

The spelling of 157289229 in words is "one hundred fifty-seven million, two hundred eighty-nine thousand, two hundred twenty-nine".