2172487507 has 2 divisors, whose sum is σ = 2172487508. Its totient is φ = 2172487506.

The previous prime is 2172487483. The next prime is 2172487547. The reversal of 2172487507 is 7057842712.

2172487507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172487507 is a prime.

It is not a weakly prime, because it can be changed into another prime (2172487547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086243753 + 1086243754.

It is an arithmetic number, because the mean of its divisors is an integer number (1086243754).

Almost surely, 2^2172487507 is an apocalyptic number.

2172487507 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172487507 is an equidigital number, since it uses as much as digits as its factorization.

2172487507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 219520, while the sum is 43.

The square root of 2172487507 is about 46609.9507294312. The cubic root of 2172487507 is about 1295.1470953895.

The spelling of 2172487507 in words is "two billion, one hundred seventy-two million, four hundred eighty-seven thousand, five hundred seven".