2155126260 has 48 divisors (see below), whose sum is σ = 6896405376. Its totient is φ = 492600192.

The previous prime is 2155126247. The next prime is 2155126273. The reversal of 2155126260 is 626215512.

It is an interprime number because it is at equal distance from previous prime (2155126247) and next prime (2155126273).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2565207 + ... + 2566046.

It is an arithmetic number, because the mean of its divisors is an integer number (143675112).

Almost surely, 2^2155126260 is an apocalyptic number.

2155126260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155126260 is an abundant number, since it is smaller than the sum of its proper divisors (4741279116).

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

2155126260 is a wasteful number, since it uses less digits than its factorization.

2155126260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5131272 (or 5131270 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 2155126260 is about 46423.3374500369. The cubic root of 2155126260 is about 1291.6878453320.

The spelling of 2155126260 in words is "two billion, one hundred fifty-five million, one hundred twenty-six thousand, two hundred sixty".