157572017 has 2 divisors, whose sum is σ = 157572018. Its totient is φ = 157572016.

The previous prime is 157572001. The next prime is 157572029. The reversal of 157572017 is 710275751.

It is a happy number.

157572017 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., 95335696 + 62236321 = 9764^2 + 7889^2 .

It is a cyclic number.

It is not a de Polignac number, because 157572017 - 2⁴ = 157572001 is a prime.

It is not a weakly prime, because it can be changed into another prime (157572047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78786008 + 78786009.

It is an arithmetic number, because the mean of its divisors is an integer number (78786009).

Almost surely, 2^157572017 is an apocalyptic number.

It is an amenable number.

157572017 is a deficient number, since it is larger than the sum of its proper divisors (1).

157572017 is an equidigital number, since it uses as much as digits as its factorization.

157572017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17150, while the sum is 35.

The square root of 157572017 is about 12552.7692960558. The cubic root of 157572017 is about 540.1234479999.

The spelling of 157572017 in words is "one hundred fifty-seven million, five hundred seventy-two thousand, seventeen".