1125555071 has 4 divisors (see below), whose sum is σ = 1174492272. Its totient is φ = 1076617872.

The previous prime is 1125555061. The next prime is 1125555077. The reversal of 1125555071 is 1705555211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1125555071 - 2¹⁰ = 1125554047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125555077) 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, 24468566 + ... + 24468611.

It is an arithmetic number, because the mean of its divisors is an integer number (293623068).

Almost surely, 2^1125555071 is an apocalyptic number.

1125555071 is a deficient number, since it is larger than the sum of its proper divisors (48937201).

1125555071 is an equidigital number, since it uses as much as digits as its factorization.

1125555071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48937200.

The product of its (nonzero) digits is 8750, while the sum is 32.

The square root of 1125555071 is about 33549.2931520174. The cubic root of 1125555071 is about 1040.2129343954.

The spelling of 1125555071 in words is "one billion, one hundred twenty-five million, five hundred fifty-five thousand, seventy-one".