1154505051 has 24 divisors (see below), whose sum is σ = 1971571680. Its totient is φ = 636967296.

The previous prime is 1154505049. The next prime is 1154505091. The reversal of 1154505051 is 1505054511.

1154505051 is a `hidden beast` number, since 1 + 154 + 5 + 0 + 505 + 1 = 666.

It is not a de Polignac number, because 1154505051 - 2¹ = 1154505049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1154505031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 314130 + ... + 317783.

It is an arithmetic number, because the mean of its divisors is an integer number (82148820).

Almost surely, 2^1154505051 is an apocalyptic number.

1154505051 is a deficient number, since it is larger than the sum of its proper divisors (817066629).

1154505051 is a wasteful number, since it uses less digits than its factorization.

1154505051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631955 (or 631952 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 1154505051 is about 33978.0083436331. The cubic root of 1154505051 is about 1049.0558560566.

Adding to 1154505051 its reverse (1505054511), we get a palindrome (2659559562).

The spelling of 1154505051 in words is "one billion, one hundred fifty-four million, five hundred five thousand, fifty-one".