2155301040 has 160 divisors (see below), whose sum is σ = 7058405376. Its totient is φ = 543191040.

The previous prime is 2155301039. The next prime is 2155301041. The reversal of 2155301040 is 401035512.

It is an interprime number because it is at equal distance from previous prime (2155301039) and next prime (2155301041).

It is a junction number, because it is equal to n+sod(n) for n = 2155300998 and 2155301016.

It is not an unprimeable number, because it can be changed into a prime (2155301041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316552 + ... + 323288.

Almost surely, 2^2155301040 is an apocalyptic number.

2155301040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155301040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3529202688).

2155301040 is an abundant number, since it is smaller than the sum of its proper divisors (4903104336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155301040 is a wasteful number, since it uses less digits than its factorization.

2155301040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6827 (or 6821 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2155301040 is about 46425.2198702386. The cubic root of 2155301040 is about 1291.7227628684.

Adding to 2155301040 its reverse (401035512), we get a palindrome (2556336552).

The spelling of 2155301040 in words is "two billion, one hundred fifty-five million, three hundred one thousand, forty".