157262557 has 2 divisors, whose sum is σ = 157262558. Its totient is φ = 157262556.

The previous prime is 157262551. The next prime is 157262561. The reversal of 157262557 is 755262751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94361796 + 62900761 = 9714^2 + 7931^2 .

It is an emirp because it is prime and its reverse (755262751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157262557 - 2¹⁵ = 157229789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157262551) 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, 78631278 + 78631279.

It is an arithmetic number, because the mean of its divisors is an integer number (78631279).

Almost surely, 2^157262557 is an apocalyptic number.

It is an amenable number.

157262557 is a deficient number, since it is larger than the sum of its proper divisors (1).

157262557 is an equidigital number, since it uses as much as digits as its factorization.

157262557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147000, while the sum is 40.

The square root of 157262557 is about 12540.4368743677. The cubic root of 157262557 is about 539.7696285290.

The spelling of 157262557 in words is "one hundred fifty-seven million, two hundred sixty-two thousand, five hundred fifty-seven".