2015401155 has 48 divisors (see below), whose sum is σ = 3444088320. Its totient is φ = 1003601664.

The previous prime is 2015401147. The next prime is 2015401159. The reversal of 2015401155 is 5511045102.

It is not a de Polignac number, because 2015401155 - 2³ = 2015401147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015401159) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1518102 + ... + 1519428.

It is an arithmetic number, because the mean of its divisors is an integer number (71751840).

Almost surely, 2^2015401155 is an apocalyptic number.

2015401155 is a deficient number, since it is larger than the sum of its proper divisors (1428687165).

2015401155 is a wasteful number, since it uses less digits than its factorization.

2015401155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500 (or 1427 counting only the distinct ones).

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

The square root of 2015401155 is about 44893.2194768876. The cubic root of 2015401155 is about 1263.1468237987.

Adding to 2015401155 its reverse (5511045102), we get a palindrome (7526446257).

The spelling of 2015401155 in words is "two billion, fifteen million, four hundred one thousand, one hundred fifty-five".