2151250987 has 2 divisors, whose sum is σ = 2151250988. Its totient is φ = 2151250986.

The previous prime is 2151250967. The next prime is 2151251029. The reversal of 2151250987 is 7890521512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151250987 is a prime.

It is not a weakly prime, because it can be changed into another prime (2151250957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075625493 + 1075625494.

It is an arithmetic number, because the mean of its divisors is an integer number (1075625494).

Almost surely, 2^2151250987 is an apocalyptic number.

2151250987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151250987 is an equidigital number, since it uses as much as digits as its factorization.

2151250987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 2151250987 is about 46381.5802555282. The cubic root of 2151250987 is about 1290.9131581053.

The spelling of 2151250987 in words is "two billion, one hundred fifty-one million, two hundred fifty thousand, nine hundred eighty-seven".