2155153511 has 8 divisors (see below), whose sum is σ = 2542485504. Its totient is φ = 1787684760.

The previous prime is 2155153471. The next prime is 2155153513. The reversal of 2155153511 is 1153515512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2155153511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155153513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4965575 + ... + 4966008.

It is an arithmetic number, because the mean of its divisors is an integer number (317810688).

Almost surely, 2^2155153511 is an apocalyptic number.

2155153511 is a deficient number, since it is larger than the sum of its proper divisors (387331993).

2155153511 is an equidigital number, since it uses as much as digits as its factorization.

2155153511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9931621.

The product of its digits is 3750, while the sum is 29.

The square root of 2155153511 is about 46423.6309545042. The cubic root of 2155153511 is about 1291.6932896591.

The spelling of 2155153511 in words is "two billion, one hundred fifty-five million, one hundred fifty-three thousand, five hundred eleven".