157667557 has 2 divisors, whose sum is σ = 157667558. Its totient is φ = 157667556.

The previous prime is 157667459. The next prime is 157667593. The reversal of 157667557 is 755766751.

157667557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145178401 + 12489156 = 12049^2 + 3534^2 .

It is a cyclic number.

It is not a de Polignac number, because 157667557 - 2¹¹ = 157665509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157667557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157607557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78833778 + 78833779.

It is an arithmetic number, because the mean of its divisors is an integer number (78833779).

Almost surely, 2^157667557 is an apocalyptic number.

It is an amenable number.

157667557 is a deficient number, since it is larger than the sum of its proper divisors (1).

157667557 is an equidigital number, since it uses as much as digits as its factorization.

157667557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1543500, while the sum is 49.

The square root of 157667557 is about 12556.5742541507. The cubic root of 157667557 is about 540.2325895620.

The spelling of 157667557 in words is "one hundred fifty-seven million, six hundred sixty-seven thousand, five hundred fifty-seven".