2015552121 has 8 divisors (see below), whose sum is σ = 2931712224. Its totient is φ = 1221546720.

The previous prime is 2015552111. The next prime is 2015552131. The reversal of 2015552121 is 1212555102.

It is an interprime number because it is at equal distance from previous prime (2015552111) and next prime (2015552131).

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

It is not a de Polignac number, because 2015552121 - 2¹⁴ = 2015535737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2015552091 and 2015552100.

It is not an unprimeable number, because it can be changed into a prime (2015552111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30538636 + ... + 30538701.

It is an arithmetic number, because the mean of its divisors is an integer number (366464028).

Almost surely, 2^2015552121 is an apocalyptic number.

It is an amenable number.

2015552121 is a deficient number, since it is larger than the sum of its proper divisors (916160103).

2015552121 is a wasteful number, since it uses less digits than its factorization.

2015552121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61077351.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 2015552121 is about 44894.9008351728. The cubic root of 2015552121 is about 1263.1783621787.

The spelling of 2015552121 in words is "two billion, fifteen million, five hundred fifty-two thousand, one hundred twenty-one".