2155630513 has 4 divisors (see below), whose sum is σ = 2201495040. Its totient is φ = 2109765988.

The previous prime is 2155630493. The next prime is 2155630537. The reversal of 2155630513 is 3150365512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2155630513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155630573) 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, 22932193 + ... + 22932286.

It is an arithmetic number, because the mean of its divisors is an integer number (550373760).

Almost surely, 2^2155630513 is an apocalyptic number.

It is an amenable number.

2155630513 is a deficient number, since it is larger than the sum of its proper divisors (45864527).

2155630513 is an equidigital number, since it uses as much as digits as its factorization.

2155630513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45864526.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 2155630513 is about 46428.7681615612. The cubic root of 2155630513 is about 1291.7885798288.

The spelling of 2155630513 in words is "two billion, one hundred fifty-five million, six hundred thirty thousand, five hundred thirteen".