1154297145 has 16 divisors (see below), whose sum is σ = 1854807552. Its totient is φ = 612981120.

The previous prime is 1154297143. The next prime is 1154297173. The reversal of 1154297145 is 5417924511.

It is a happy number.

It is not a de Polignac number, because 1154297145 - 2¹ = 1154297143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1154297141) 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, 161641 + ... + 168630.

It is an arithmetic number, because the mean of its divisors is an integer number (115925472).

Almost surely, 2^1154297145 is an apocalyptic number.

1154297145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1154297145 is a deficient number, since it is larger than the sum of its proper divisors (700510407).

1154297145 is a wasteful number, since it uses less digits than its factorization.

1154297145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330512.

The product of its digits is 50400, while the sum is 39.

The square root of 1154297145 is about 33974.9487858334. The cubic root of 1154297145 is about 1048.9928801229.

The spelling of 1154297145 in words is "one billion, one hundred fifty-four million, two hundred ninety-seven thousand, one hundred forty-five".