157166722 has 8 divisors (see below), whose sum is σ = 236160396. Its totient is φ = 78446592.

The previous prime is 157166699. The next prime is 157166729. The reversal of 157166722 is 227661751.

It can be written as a sum of positive squares in 2 ways, for example, as 156525121 + 641601 = 12511^2 + 801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (157166729) 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, 66943 + ... + 69250.

Almost surely, 2^157166722 is an apocalyptic number.

157166722 is a deficient number, since it is larger than the sum of its proper divisors (78993674).

157166722 is a wasteful number, since it uses less digits than its factorization.

157166722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136772.

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

The square root of 157166722 is about 12536.6152529301. The cubic root of 157166722 is about 539.6599619632.

The spelling of 157166722 in words is "one hundred fifty-seven million, one hundred sixty-six thousand, seven hundred twenty-two".