157122459 has 24 divisors (see below), whose sum is σ = 244953072. Its totient is φ = 96477120.

The previous prime is 157122431. The next prime is 157122467. The reversal of 157122459 is 954221751.

It is not a de Polignac number, because 157122459 - 2¹⁶ = 157056923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157122359) 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 23 ways as a sum of consecutive naturals, for example, 63964 + ... + 66374.

It is an arithmetic number, because the mean of its divisors is an integer number (10206378).

Almost surely, 2^157122459 is an apocalyptic number.

157122459 is a deficient number, since it is larger than the sum of its proper divisors (87830613).

157122459 is a wasteful number, since it uses less digits than its factorization.

157122459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987 (or 2984 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 157122459 is about 12534.8497797142. The cubic root of 157122459 is about 539.6092955724.

The spelling of 157122459 in words is "one hundred fifty-seven million, one hundred twenty-two thousand, four hundred fifty-nine".