206450157 has 4 divisors (see below), whose sum is σ = 275266880. Its totient is φ = 137633436.

The previous prime is 206450149. The next prime is 206450171. The reversal of 206450157 is 751054602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 206450157 - 2³ = 206450149 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 (206450117) 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, 34408357 + ... + 34408362.

It is an arithmetic number, because the mean of its divisors is an integer number (68816720).

Almost surely, 2^206450157 is an apocalyptic number.

It is an amenable number.

206450157 is a deficient number, since it is larger than the sum of its proper divisors (68816723).

206450157 is an equidigital number, since it uses as much as digits as its factorization.

206450157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68816722.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 206450157 is about 14368.3734987646. The cubic root of 206450157 is about 591.0239396397.

The spelling of 206450157 in words is "two hundred six million, four hundred fifty thousand, one hundred fifty-seven".