1120051557 has 20 divisors (see below), whose sum is σ = 1675782240. Its totient is φ = 745532424.

The previous prime is 1120051553. The next prime is 1120051591. The reversal of 1120051557 is 7551500211.

It is not a de Polignac number, because 1120051557 - 2² = 1120051553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1120051557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120051553) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42888 + ... + 63870.

It is an arithmetic number, because the mean of its divisors is an integer number (83789112).

Almost surely, 2^1120051557 is an apocalyptic number.

It is an amenable number.

1120051557 is a deficient number, since it is larger than the sum of its proper divisors (555730683).

1120051557 is an equidigital number, since it uses as much as digits as its factorization.

1120051557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21654 (or 21645 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 1120051557 is about 33467.1713325163. The cubic root of 1120051557 is about 1038.5147552101.

Adding to 1120051557 its reverse (7551500211), we get a palindrome (8671551768).

The spelling of 1120051557 in words is "one billion, one hundred twenty million, fifty-one thousand, five hundred fifty-seven".