2115105401 has 8 divisors (see below), whose sum is σ = 2188787400. Its totient is φ = 2041473280.

The previous prime is 2115105383. The next prime is 2115105409. The reversal of 2115105401 is 1045015112.

It can be written as a sum of positive squares in 4 ways, for example, as 919605625 + 1195499776 = 30325^2 + 34576^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115105401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115105409) 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, 87521 + ... + 109041.

It is an arithmetic number, because the mean of its divisors is an integer number (273598425).

Almost surely, 2^2115105401 is an apocalyptic number.

It is an amenable number.

2115105401 is a deficient number, since it is larger than the sum of its proper divisors (73681999).

2115105401 is a wasteful number, since it uses less digits than its factorization.

2115105401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24939.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 2115105401 is about 45990.2750698449. The cubic root of 2115105401 is about 1283.6422548752.

The spelling of 2115105401 in words is "two billion, one hundred fifteen million, one hundred five thousand, four hundred one".