1100551087 has 4 divisors (see below), whose sum is σ = 1100664360. Its totient is φ = 1100437816.

The previous prime is 1100551063. The next prime is 1100551121. The reversal of 1100551087 is 7801550011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7801550011 = 37 ⋅210852703.

It is a cyclic number.

It is not a de Polignac number, because 1100551087 - 2¹⁵ = 1100518319 is a prime.

It is a super-2 number, since 2×1100551087² = 2422425390193763138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100551037) 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, 40537 + ... + 62002.

It is an arithmetic number, because the mean of its divisors is an integer number (275166090).

Almost surely, 2^1100551087 is an apocalyptic number.

1100551087 is a deficient number, since it is larger than the sum of its proper divisors (113273).

1100551087 is a wasteful number, since it uses less digits than its factorization.

1100551087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113272.

The product of its (nonzero) digits is 1400, while the sum is 28.

The square root of 1100551087 is about 33174.5548123860. The cubic root of 1100551087 is about 1032.4524733892.

The spelling of 1100551087 in words is "one billion, one hundred million, five hundred fifty-one thousand, eighty-seven".