1120165551 has 16 divisors (see below), whose sum is σ = 1699981920. Its totient is φ = 728562240.

The previous prime is 1120165549. The next prime is 1120165583. The reversal of 1120165551 is 1555610211.

1120165551 is a `hidden beast` number, since 1 + 1 + 2 + 0 + 1 + 655 + 5 + 1 = 666.

1120165551 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1120165551 - 2¹ = 1120165549 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120165591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504840 + ... + 507053.

It is an arithmetic number, because the mean of its divisors is an integer number (106248870).

Almost surely, 2^1120165551 is an apocalyptic number.

1120165551 is a deficient number, since it is larger than the sum of its proper divisors (579816369).

1120165551 is a wasteful number, since it uses less digits than its factorization.

1120165551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011943 (or 1011937 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The square root of 1120165551 is about 33468.8743611135. The cubic root of 1120165551 is about 1038.5499858607.

Adding to 1120165551 its reverse (1555610211), we get a palindrome (2675775762).

The spelling of 1120165551 in words is "one billion, one hundred twenty million, one hundred sixty-five thousand, five hundred fifty-one".