157522221251 has 2 divisors, whose sum is σ = 157522221252. Its totient is φ = 157522221250.

The previous prime is 157522221097. The next prime is 157522221271. The reversal of 157522221251 is 152122225751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157522221251 - 2¹⁰ = 157522220227 is a prime.

It is not a weakly prime, because it can be changed into another prime (157522221271) 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, 78761110625 + 78761110626.

It is an arithmetic number, because the mean of its divisors is an integer number (78761110626).

Almost surely, 2^157522221251 is an apocalyptic number.

157522221251 is a deficient number, since it is larger than the sum of its proper divisors (1).

157522221251 is an equidigital number, since it uses as much as digits as its factorization.

157522221251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28000, while the sum is 35.

The spelling of 157522221251 in words is "one hundred fifty-seven billion, five hundred twenty-two million, two hundred twenty-one thousand, two hundred fifty-one".