1155400054 has 16 divisors (see below), whose sum is σ = 1760445792. Its totient is φ = 568617408.

The previous prime is 1155400003. The next prime is 1155400063. The reversal of 1155400054 is 4500045511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65572 + ... + 81304.

It is an arithmetic number, because the mean of its divisors is an integer number (110027862).

Almost surely, 2^1155400054 is an apocalyptic number.

1155400054 is a deficient number, since it is larger than the sum of its proper divisors (605045738).

1155400054 is a wasteful number, since it uses less digits than its factorization.

1155400054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16311.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1155400054 is about 33991.1761196932. The cubic root of 1155400054 is about 1049.3268713630.

Adding to 1155400054 its reverse (4500045511), we get a palindrome (5655445565).

The spelling of 1155400054 in words is "one billion, one hundred fifty-five million, four hundred thousand, fifty-four".