157173047 has 2 divisors, whose sum is σ = 157173048. Its totient is φ = 157173046.

The previous prime is 157173019. The next prime is 157173059. The reversal of 157173047 is 740371751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157173047 - 2¹⁰ = 157172023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157172998 and 157173016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157173017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78586523 + 78586524.

It is an arithmetic number, because the mean of its divisors is an integer number (78586524).

Almost surely, 2^157173047 is an apocalyptic number.

157173047 is a deficient number, since it is larger than the sum of its proper divisors (1).

157173047 is an equidigital number, since it uses as much as digits as its factorization.

157173047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 157173047 is about 12536.8675114639. The cubic root of 157173047 is about 539.6672012045.

The spelling of 157173047 in words is "one hundred fifty-seven million, one hundred seventy-three thousand, forty-seven".