157210210 has 8 divisors (see below), whose sum is σ = 282978396. Its totient is φ = 62884080.

The previous prime is 157210153. The next prime is 157210213. The reversal of 157210210 is 12012751.

It can be written as a sum of positive squares in 2 ways, for example, as 150773841 + 6436369 = 12279^2 + 2537^2 .

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

It is not an unprimeable number, because it can be changed into a prime (157210213) 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, 7860501 + ... + 7860520.

Almost surely, 2^157210210 is an apocalyptic number.

157210210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157210210 is a deficient number, since it is larger than the sum of its proper divisors (125768186).

157210210 is a wasteful number, since it uses less digits than its factorization.

157210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15721028.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 157210210 is about 12538.3495724118. The cubic root of 157210210 is about 539.7097319736.

Adding to 157210210 its reverse (12012751), we get a palindrome (169222961).

The spelling of 157210210 in words is "one hundred fifty-seven million, two hundred ten thousand, two hundred ten".