157722229 has 12 divisors (see below), whose sum is σ = 183678624. Its totient is φ = 135038904.

The previous prime is 157722217. The next prime is 157722239. The reversal of 157722229 is 922227751.

It is not a de Polignac number, because 157722229 - 2⁷ = 157722101 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 (157722239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77742 + ... + 79744.

It is an arithmetic number, because the mean of its divisors is an integer number (15306552).

Almost surely, 2^157722229 is an apocalyptic number.

It is an amenable number.

157722229 is a deficient number, since it is larger than the sum of its proper divisors (25956395).

157722229 is a wasteful number, since it uses less digits than its factorization.

157722229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624 (or 3617 counting only the distinct ones).

The product of its digits is 35280, while the sum is 37.

The square root of 157722229 is about 12558.7510923658. The cubic root of 157722229 is about 540.2950251141.

The spelling of 157722229 in words is "one hundred fifty-seven million, seven hundred twenty-two thousand, two hundred twenty-nine".