156601157 has 4 divisors (see below), whose sum is σ = 157506540. Its totient is φ = 155695776.

The previous prime is 156601139. The next prime is 156601217. The reversal of 156601157 is 751106651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751106651 = 19 ⋅39531929.

It can be written as a sum of positive squares in 2 ways, for example, as 142229476 + 14371681 = 11926^2 + 3791^2 .

It is a cyclic number.

It is not a de Polignac number, because 156601157 - 2⁸ = 156600901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156601117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452432 + ... + 452777.

It is an arithmetic number, because the mean of its divisors is an integer number (39376635).

Almost surely, 2^156601157 is an apocalyptic number.

It is an amenable number.

156601157 is a deficient number, since it is larger than the sum of its proper divisors (905383).

156601157 is an equidigital number, since it uses as much as digits as its factorization.

156601157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905382.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 156601157 is about 12514.0383969365. The cubic root of 156601157 is about 539.0118611879.

The spelling of 156601157 in words is "one hundred fifty-six million, six hundred one thousand, one hundred fifty-seven".