157910105 has 4 divisors (see below), whose sum is σ = 189492132. Its totient is φ = 126328080.

The previous prime is 157910101. The next prime is 157910107. The reversal of 157910105 is 501019751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501019751 = 2579 ⋅194269.

It can be written as a sum of positive squares in 2 ways, for example, as 120406729 + 37503376 = 10973^2 + 6124^2 .

It is not a de Polignac number, because 157910105 - 2² = 157910101 is a prime.

It is a super-2 number, since 2×157910105² = 49871202522222050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157910101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15791006 + ... + 15791015.

It is an arithmetic number, because the mean of its divisors is an integer number (47373033).

Almost surely, 2^157910105 is an apocalyptic number.

It is an amenable number.

157910105 is a deficient number, since it is larger than the sum of its proper divisors (31582027).

157910105 is an equidigital number, since it uses as much as digits as its factorization.

157910105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31582026.

The product of its (nonzero) digits is 1575, while the sum is 29.

The square root of 157910105 is about 12566.2287501064. The cubic root of 157910105 is about 540.5094700286.

Adding to 157910105 its reverse (501019751), we get a palindrome (658929856).

The spelling of 157910105 in words is "one hundred fifty-seven million, nine hundred ten thousand, one hundred five".