2155032007 has 2 divisors, whose sum is σ = 2155032008. Its totient is φ = 2155032006.

The previous prime is 2155031987. The next prime is 2155032067. The reversal of 2155032007 is 7002305512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2155032007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155032067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077516003 + 1077516004.

It is an arithmetic number, because the mean of its divisors is an integer number (1077516004).

Almost surely, 2^2155032007 is an apocalyptic number.

2155032007 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155032007 is an equidigital number, since it uses as much as digits as its factorization.

2155032007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 2155032007 is about 46422.3222921904. The cubic root of 2155032007 is about 1291.6690146906.

Adding to 2155032007 its reverse (7002305512), we get a palindrome (9157337519).

The spelling of 2155032007 in words is "two billion, one hundred fifty-five million, thirty-two thousand, seven".