157403173 has 2 divisors, whose sum is σ = 157403174. Its totient is φ = 157403172.

The previous prime is 157403171. The next prime is 157403179. The reversal of 157403173 is 371304751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149377284 + 8025889 = 12222^2 + 2833^2 .

It is a cyclic number.

It is not a de Polignac number, because 157403173 - 2¹ = 157403171 is a prime.

Together with 157403171, it forms a pair of twin primes.

It is equal to p_8837014 and since 157403173 and 8837014 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157403171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78701586 + 78701587.

It is an arithmetic number, because the mean of its divisors is an integer number (78701587).

Almost surely, 2^157403173 is an apocalyptic number.

It is an amenable number.

157403173 is a deficient number, since it is larger than the sum of its proper divisors (1).

157403173 is an equidigital number, since it uses as much as digits as its factorization.

157403173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 157403173 is about 12546.0421249094. The cubic root of 157403173 is about 539.9304585802.

The spelling of 157403173 in words is "one hundred fifty-seven million, four hundred three thousand, one hundred seventy-three".