162855121 has 32 divisors (see below), whose sum is σ = 209212416. Its totient is φ = 124416000.

The previous prime is 162855109. The next prime is 162855131. The reversal of 162855121 is 121558261.

It is a 5-Lehmer number, since φ(162855121) divides (162855121-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 162855121 - 2⁵ = 162855089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a deceptive number, since it divides R_162855120.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162855131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74281 + ... + 76441.

It is an arithmetic number, because the mean of its divisors is an integer number (6537888).

Almost surely, 2^162855121 is an apocalyptic number.

162855121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

162855121 is a deficient number, since it is larger than the sum of its proper divisors (46357295).

162855121 is a wasteful number, since it uses less digits than its factorization.

162855121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233.

The product of its digits is 4800, while the sum is 31.

The square root of 162855121 is about 12761.4701739259. The cubic root of 162855121 is about 546.0936667027.

The spelling of 162855121 in words is "one hundred sixty-two million, eight hundred fifty-five thousand, one hundred twenty-one".