2155624106 has 8 divisors (see below), whose sum is σ = 3423638340. Its totient is φ = 1014411328.

The previous prime is 2155624103. The next prime is 2155624111. The reversal of 2155624106 is 6014265512.

It can be written as a sum of positive squares in 2 ways, for example, as 2078904025 + 76720081 = 45595^2 + 8759^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2155624103) 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, 31700321 + ... + 31700388.

Almost surely, 2^2155624106 is an apocalyptic number.

2155624106 is a deficient number, since it is larger than the sum of its proper divisors (1268014234).

2155624106 is a wasteful number, since it uses less digits than its factorization.

2155624106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63400728.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2155624106 is about 46428.6991633408. The cubic root of 2155624106 is about 1291.7873000026.

Adding to 2155624106 its reverse (6014265512), we get a palindrome (8169889618).

The spelling of 2155624106 in words is "two billion, one hundred fifty-five million, six hundred twenty-four thousand, one hundred six".