157543223 has 2 divisors, whose sum is σ = 157543224. Its totient is φ = 157543222.

The previous prime is 157543207. The next prime is 157543237. The reversal of 157543223 is 322345751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157543223 - 2⁴ = 157543207 is a prime.

It is a super-2 number, since 2×157543223² = 49639734226455458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157543223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157543273) 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 as a sum of consecutive naturals, namely, 78771611 + 78771612.

It is an arithmetic number, because the mean of its divisors is an integer number (78771612).

Almost surely, 2^157543223 is an apocalyptic number.

157543223 is a deficient number, since it is larger than the sum of its proper divisors (1).

157543223 is an equidigital number, since it uses as much as digits as its factorization.

157543223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 32.

The square root of 157543223 is about 12551.6223254207. The cubic root of 157543223 is about 540.0905460877.

Adding to 157543223 its reverse (322345751), we get a palindrome (479888974).

The spelling of 157543223 in words is "one hundred fifty-seven million, five hundred forty-three thousand, two hundred twenty-three".