157122522 has 72 divisors (see below), whose sum is σ = 368795700. Its totient is φ = 48284544.

The previous prime is 157122509. The next prime is 157122529. The reversal of 157122522 is 225221751.

157122522 is a `hidden beast` number, since 15 + 7 + 122 + 522 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 152547201 + 4575321 = 12351^2 + 2139^2 .

It is not an unprimeable number, because it can be changed into a prime (157122529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 275854 + ... + 276422.

Almost surely, 2^157122522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157122522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184397850).

157122522 is an abundant number, since it is smaller than the sum of its proper divisors (211673178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157122522 is a wasteful number, since it uses less digits than its factorization.

157122522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 626 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 157122522 is about 12534.8522927077. The cubic root of 157122522 is about 539.6093676932.

The spelling of 157122522 in words is "one hundred fifty-seven million, one hundred twenty-two thousand, five hundred twenty-two".