157226807 has 4 divisors (see below), whose sum is σ = 158050176. Its totient is φ = 156403440.

The previous prime is 157226789. The next prime is 157226809. The reversal of 157226807 is 708622751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708622751 = 317 ⋅2235403.

It is a cyclic number.

It is not a de Polignac number, because 157226807 - 2¹⁴ = 157210423 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 (157226809) 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, 411398 + ... + 411779.

It is an arithmetic number, because the mean of its divisors is an integer number (39512544).

Almost surely, 2^157226807 is an apocalyptic number.

157226807 is a deficient number, since it is larger than the sum of its proper divisors (823369).

157226807 is an equidigital number, since it uses as much as digits as its factorization.

157226807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823368.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 157226807 is about 12539.0114044130. The cubic root of 157226807 is about 539.7287240548.

The spelling of 157226807 in words is "one hundred fifty-seven million, two hundred twenty-six thousand, eight hundred seven".