157840101 has 6 divisors (see below), whose sum is σ = 227991270. Its totient is φ = 105226728.

The previous prime is 157840097. The next prime is 157840103. The reversal of 157840101 is 101048751.

157840101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 141848100 + 15992001 = 11910^2 + 3999^2 .

It is not a de Polignac number, because 157840101 - 2² = 157840097 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157840103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8768886 + ... + 8768903.

It is an arithmetic number, because the mean of its divisors is an integer number (37998545).

Almost surely, 2^157840101 is an apocalyptic number.

It is an amenable number.

157840101 is a deficient number, since it is larger than the sum of its proper divisors (70151169).

157840101 is a wasteful number, since it uses less digits than its factorization.

157840101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17537795 (or 17537792 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 157840101 is about 12563.4430392309. The cubic root of 157840101 is about 540.4295861443.

Adding to 157840101 its reverse (101048751), we get a palindrome (258888852).

The spelling of 157840101 in words is "one hundred fifty-seven million, eight hundred forty thousand, one hundred one".