1115258087 has 4 divisors (see below), whose sum is σ = 1116264840. Its totient is φ = 1114251336.

The previous prime is 1115258071. The next prime is 1115258099. The reversal of 1115258087 is 7808525111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7808525111 = 9551 ⋅817561.

It is a cyclic number.

It is not a de Polignac number, because 1115258087 - 2⁴ = 1115258071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115258087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115258987) 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, 501713 + ... + 503930.

It is an arithmetic number, because the mean of its divisors is an integer number (279066210).

Almost surely, 2^1115258087 is an apocalyptic number.

1115258087 is a deficient number, since it is larger than the sum of its proper divisors (1006753).

1115258087 is a wasteful number, since it uses less digits than its factorization.

1115258087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006752.

The product of its (nonzero) digits is 22400, while the sum is 38.

The square root of 1115258087 is about 33395.4800384723. The cubic root of 1115258087 is about 1037.0311307049.

The spelling of 1115258087 in words is "one billion, one hundred fifteen million, two hundred fifty-eight thousand, eighty-seven".