162455221 has 4 divisors (see below), whose sum is σ = 167695744. Its totient is φ = 157214700.

The previous prime is 162455113. The next prime is 162455239. The reversal of 162455221 is 122554261.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122554261 = 29 ⋅4226009.

It is a cyclic number.

It is not a de Polignac number, because 162455221 - 2¹⁵ = 162422453 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 162455221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162455021) 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, 2620215 + ... + 2620276.

It is an arithmetic number, because the mean of its divisors is an integer number (41923936).

Almost surely, 2^162455221 is an apocalyptic number.

It is an amenable number.

162455221 is a deficient number, since it is larger than the sum of its proper divisors (5240523).

162455221 is an equidigital number, since it uses as much as digits as its factorization.

162455221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5240522.

The product of its digits is 4800, while the sum is 28.

The square root of 162455221 is about 12745.7922860841. The cubic root of 162455221 is about 545.6463123289.

The spelling of 162455221 in words is "one hundred sixty-two million, four hundred fifty-five thousand, two hundred twenty-one".