157323641 has 2 divisors, whose sum is σ = 157323642. Its totient is φ = 157323640.

The previous prime is 157323623. The next prime is 157323643. The reversal of 157323641 is 146323751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135233641 + 22090000 = 11629^2 + 4700^2 .

It is a cyclic number.

It is not a de Polignac number, because 157323641 - 2¹⁴ = 157307257 is a prime.

Together with 157323643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 157323598 and 157323607.

It is not a weakly prime, because it can be changed into another prime (157323643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78661820 + 78661821.

It is an arithmetic number, because the mean of its divisors is an integer number (78661821).

Almost surely, 2^157323641 is an apocalyptic number.

It is an amenable number.

157323641 is a deficient number, since it is larger than the sum of its proper divisors (1).

157323641 is an equidigital number, since it uses as much as digits as its factorization.

157323641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 157323641 is about 12542.8721192556. The cubic root of 157323641 is about 539.8395053444.

The spelling of 157323641 in words is "one hundred fifty-seven million, three hundred twenty-three thousand, six hundred forty-one".