157021105 has 8 divisors (see below), whose sum is σ = 188496000. Its totient is φ = 125569776.

The previous prime is 157021099. The next prime is 157021141. The reversal of 157021105 is 501120751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157021105 - 2³ = 157021097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16546 + ... + 24244.

It is an arithmetic number, because the mean of its divisors is an integer number (23562000).

Almost surely, 2^157021105 is an apocalyptic number.

It is an amenable number.

157021105 is a deficient number, since it is larger than the sum of its proper divisors (31474895).

157021105 is an equidigital number, since it uses as much as digits as its factorization.

157021105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11783.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 157021105 is about 12530.8062390255. The cubic root of 157021105 is about 539.4932431528.

Adding to 157021105 its reverse (501120751), we get a palindrome (658141856).

It can be divided in two parts, 15702 and 1105, that added together give a 5-th power (16807 = 7⁵).

The spelling of 157021105 in words is "one hundred fifty-seven million, twenty-one thousand, one hundred five".