2154422531 has 8 divisors (see below), whose sum is σ = 2278163328. Its totient is φ = 2034072000.

The previous prime is 2154422527. The next prime is 2154422561. The reversal of 2154422531 is 1352244512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2154422531 - 2² = 2154422527 is a prime.

It is a super-2 number, since 2×2154422531² = 9283072884160891922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2154422494 and 2154422503.

It is not an unprimeable number, because it can be changed into a prime (2154422561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846260 + ... + 848801.

It is an arithmetic number, because the mean of its divisors is an integer number (284770416).

Almost surely, 2^2154422531 is an apocalyptic number.

2154422531 is a deficient number, since it is larger than the sum of its proper divisors (123740797).

2154422531 is a wasteful number, since it uses less digits than its factorization.

2154422531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695133.

The product of its digits is 9600, while the sum is 29.

The square root of 2154422531 is about 46415.7573567425. The cubic root of 2154422531 is about 1291.5472352943.

The spelling of 2154422531 in words is "two billion, one hundred fifty-four million, four hundred twenty-two thousand, five hundred thirty-one".