1011125544 has 128 divisors (see below), whose sum is σ = 3000170880. Its totient is φ = 279936000.

The previous prime is 1011125537. The next prime is 1011125561. The reversal of 1011125544 is 4455211101.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345174 + ... + 348090.

It is an arithmetic number, because the mean of its divisors is an integer number (23438835).

Almost surely, 2^1011125544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011125544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1500085440).

1011125544 is an abundant number, since it is smaller than the sum of its proper divisors (1989045336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011125544 is a wasteful number, since it uses less digits than its factorization.

1011125544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051 (or 3047 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1011125544 is about 31798.2003264336. The cubic root of 1011125544 is about 1003.6948459661.

Adding to 1011125544 its reverse (4455211101), we get a palindrome (5466336645).

The spelling of 1011125544 in words is "one billion, eleven million, one hundred twenty-five thousand, five hundred forty-four".