2155253051 has 4 divisors (see below), whose sum is σ = 2463146352. Its totient is φ = 1847359752.

The previous prime is 2155253041. The next prime is 2155253063. The reversal of 2155253051 is 1503525512.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2155253051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155253041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153946640 + ... + 153946653.

It is an arithmetic number, because the mean of its divisors is an integer number (615786588).

Almost surely, 2^2155253051 is an apocalyptic number.

2155253051 is a deficient number, since it is larger than the sum of its proper divisors (307893301).

2155253051 is an equidigital number, since it uses as much as digits as its factorization.

2155253051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307893300.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 2155253051 is about 46424.7030254368. The cubic root of 2155253051 is about 1291.7131758173.

Adding to 2155253051 its reverse (1503525512), we get a palindrome (3658778563).

The spelling of 2155253051 in words is "two billion, one hundred fifty-five million, two hundred fifty-three thousand, fifty-one".