972105287 has 2 divisors, whose sum is σ = 972105288. Its totient is φ = 972105286.

The previous prime is 972105269. The next prime is 972105293. The reversal of 972105287 is 782501279.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972105287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972105247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486052643 + 486052644.

It is an arithmetic number, because the mean of its divisors is an integer number (486052644).

Almost surely, 2^972105287 is an apocalyptic number.

972105287 is a deficient number, since it is larger than the sum of its proper divisors (1).

972105287 is an equidigital number, since it uses as much as digits as its factorization.

972105287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 972105287 is about 31178.6030315664. The cubic root of 972105287 is about 990.6139398394.

The spelling of 972105287 in words is "nine hundred seventy-two million, one hundred five thousand, two hundred eighty-seven".