1061516587 has 4 divisors (see below), whose sum is σ = 1062588736. Its totient is φ = 1060444440.

The previous prime is 1061516563. The next prime is 1061516591. The reversal of 1061516587 is 7856151601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7856151601 = 19157 ⋅410093.

It is a cyclic number.

It is not a de Polignac number, because 1061516587 - 2⁷ = 1061516459 is a prime.

It is a super-2 number, since 2×1061516587² = 2253634928952257138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061516507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534588 + ... + 536569.

It is an arithmetic number, because the mean of its divisors is an integer number (265647184).

Almost surely, 2^1061516587 is an apocalyptic number.

1061516587 is a deficient number, since it is larger than the sum of its proper divisors (1072149).

1061516587 is an equidigital number, since it uses as much as digits as its factorization.

1061516587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072148.

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

The square root of 1061516587 is about 32580.9236670786. The cubic root of 1061516587 is about 1020.0988584819.

The spelling of 1061516587 in words is "one billion, sixty-one million, five hundred sixteen thousand, five hundred eighty-seven".