157145207 has 4 divisors (see below), whose sum is σ = 157313856. Its totient is φ = 156976560.

The previous prime is 157145189. The next prime is 157145213. The reversal of 157145207 is 702541751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702541751 = 241 ⋅2915111.

It is a cyclic number.

It is not a de Polignac number, because 157145207 - 2¹⁴ = 157128823 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 (157145237) 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 3 ways as a sum of consecutive naturals, for example, 82919 + ... + 84792.

It is an arithmetic number, because the mean of its divisors is an integer number (39328464).

Almost surely, 2^157145207 is an apocalyptic number.

157145207 is a deficient number, since it is larger than the sum of its proper divisors (168649).

157145207 is an equidigital number, since it uses as much as digits as its factorization.

157145207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168648.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 157145207 is about 12535.7571370859. The cubic root of 157145207 is about 539.6353356433.

Adding to 157145207 its reverse (702541751), we get a palindrome (859686958).

The spelling of 157145207 in words is "one hundred fifty-seven million, one hundred forty-five thousand, two hundred seven".