206264155 has 4 divisors (see below), whose sum is σ = 247516992. Its totient is φ = 165011320.

The previous prime is 206264143. The next prime is 206264167. The reversal of 206264155 is 551462602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551462602 = 2 ⋅275731301.

It is an interprime number because it is at equal distance from previous prime (206264143) and next prime (206264167).

It is not a de Polignac number, because 206264155 - 2¹⁵ = 206231387 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20626411 + ... + 20626420.

It is an arithmetic number, because the mean of its divisors is an integer number (61879248).

Almost surely, 2^206264155 is an apocalyptic number.

206264155 is a deficient number, since it is larger than the sum of its proper divisors (41252837).

206264155 is an equidigital number, since it uses as much as digits as its factorization.

206264155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41252836.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 206264155 is about 14361.8994217339. The cubic root of 206264155 is about 590.8463912710.

The spelling of 206264155 in words is "two hundred six million, two hundred sixty-four thousand, one hundred fifty-five".