157505559251 has 2 divisors, whose sum is σ = 157505559252. Its totient is φ = 157505559250.

The previous prime is 157505559157. The next prime is 157505559257. The reversal of 157505559251 is 152955505751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157505559251 - 2¹⁴ = 157505542867 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157505559251.

It is not a weakly prime, because it can be changed into another prime (157505559257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78752779625 + 78752779626.

It is an arithmetic number, because the mean of its divisors is an integer number (78752779626).

Almost surely, 2^157505559251 is an apocalyptic number.

157505559251 is a deficient number, since it is larger than the sum of its proper divisors (1).

157505559251 is an equidigital number, since it uses as much as digits as its factorization.

157505559251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1968750, while the sum is 50.

The spelling of 157505559251 in words is "one hundred fifty-seven billion, five hundred five million, five hundred fifty-nine thousand, two hundred fifty-one".