157232197 has 8 divisors (see below), whose sum is σ = 160081272. Its totient is φ = 154392000.

The previous prime is 157232191. The next prime is 157232233. The reversal of 157232197 is 791232751.

157232197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30129121 + 127103076 = 5489^2 + 11274^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 157232197 - 2³ = 157232189 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 (157232191) 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, 40923 + ... + 44599.

It is an arithmetic number, because the mean of its divisors is an integer number (20010159).

Almost surely, 2^157232197 is an apocalyptic number.

It is an amenable number.

157232197 is a deficient number, since it is larger than the sum of its proper divisors (2849075).

157232197 is an equidigital number, since it uses as much as digits as its factorization.

157232197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439.

The product of its digits is 26460, while the sum is 37.

The square root of 157232197 is about 12539.2263317958. The cubic root of 157232197 is about 539.7348915878.

The spelling of 157232197 in words is "one hundred fifty-seven million, two hundred thirty-two thousand, one hundred ninety-seven".