212455151 has 4 divisors (see below), whose sum is σ = 212521512. Its totient is φ = 212388792.

The previous prime is 212455099. The next prime is 212455157. The reversal of 212455151 is 151554212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212455151 - 2²² = 208260847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212455151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212455157) 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, 28121 + ... + 34866.

It is an arithmetic number, because the mean of its divisors is an integer number (53130378).

Almost surely, 2^212455151 is an apocalyptic number.

212455151 is a deficient number, since it is larger than the sum of its proper divisors (66361).

212455151 is an equidigital number, since it uses as much as digits as its factorization.

212455151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66360.

The product of its digits is 2000, while the sum is 26.

The square root of 212455151 is about 14575.8413479291. The cubic root of 212455151 is about 596.6996114195.

It can be divided in two parts, 2124 and 55151, that added together give a palindrome (57275).

The spelling of 212455151 in words is "two hundred twelve million, four hundred fifty-five thousand, one hundred fifty-one".