157201245 has 12 divisors (see below), whose sum is σ = 272482236. Its totient is φ = 83840640.

The previous prime is 157201243. The next prime is 157201259. The reversal of 157201245 is 542102751.

It can be written as a sum of positive squares in 2 ways, for example, as 103002201 + 54199044 = 10149^2 + 7362^2 .

It is not a de Polignac number, because 157201245 - 2¹ = 157201243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157201243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1746636 + ... + 1746725.

It is an arithmetic number, because the mean of its divisors is an integer number (22706853).

Almost surely, 2^157201245 is an apocalyptic number.

157201245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157201245 is a deficient number, since it is larger than the sum of its proper divisors (115280991).

157201245 is a wasteful number, since it uses less digits than its factorization.

157201245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493372 (or 3493369 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 157201245 is about 12537.9920641225. The cubic root of 157201245 is about 539.6994726956.

Adding to 157201245 its reverse (542102751), we get a palindrome (699303996).

The spelling of 157201245 in words is "one hundred fifty-seven million, two hundred one thousand, two hundred forty-five".