1072516987 has 4 divisors (see below), whose sum is σ = 1073201256. Its totient is φ = 1071832720.

The previous prime is 1072516981. The next prime is 1072516999. The reversal of 1072516987 is 7896152701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7896152701 = 23 ⋅343310987.

It is a cyclic number.

It is not a de Polignac number, because 1072516987 - 2¹⁹ = 1071992699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1072516981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339778 + ... + 342919.

It is an arithmetic number, because the mean of its divisors is an integer number (268300314).

Almost surely, 2^1072516987 is an apocalyptic number.

1072516987 is a deficient number, since it is larger than the sum of its proper divisors (684269).

1072516987 is an equidigital number, since it uses as much as digits as its factorization.

1072516987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684268.

The product of its (nonzero) digits is 211680, while the sum is 46.

The square root of 1072516987 is about 32749.3051376667. The cubic root of 1072516987 is about 1023.6104866579.

The spelling of 1072516987 in words is "one billion, seventy-two million, five hundred sixteen thousand, nine hundred eighty-seven".