2155351040 has 44 divisors (see below), whose sum is σ = 5170328976. Its totient is φ = 862138368.

The previous prime is 2155351019. The next prime is 2155351087. The reversal of 2155351040 is 401535512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205364 + ... + 215603.

Almost surely, 2^2155351040 is an apocalyptic number.

2155351040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155351040 is an abundant number, since it is smaller than the sum of its proper divisors (3014977936).

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

2155351040 is an equidigital number, since it uses as much as digits as its factorization.

2155351040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420992 (or 420974 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2155351040 is about 46425.7583675270. The cubic root of 2155351040 is about 1291.7327515177.

Adding to 2155351040 its reverse (401535512), we get a palindrome (2556886552).

The spelling of 2155351040 in words is "two billion, one hundred fifty-five million, three hundred fifty-one thousand, forty".