1145401055 has 4 divisors (see below), whose sum is σ = 1374481272. Its totient is φ = 916320840.

The previous prime is 1145401021. The next prime is 1145401057. The reversal of 1145401055 is 5501045411.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1145401055 - 2⁸ = 1145400799 is a prime.

It is a super-2 number, since 2×1145401055² = 2623887153590226050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145401057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114540101 + ... + 114540110.

It is an arithmetic number, because the mean of its divisors is an integer number (343620318).

Almost surely, 2^1145401055 is an apocalyptic number.

1145401055 is a deficient number, since it is larger than the sum of its proper divisors (229080217).

1145401055 is an equidigital number, since it uses as much as digits as its factorization.

1145401055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229080216.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1145401055 is about 33843.7742428353. The cubic root of 1145401055 is about 1046.2910882957.

Adding to 1145401055 its reverse (5501045411), we get a palindrome (6646446466).

The spelling of 1145401055 in words is "one billion, one hundred forty-five million, four hundred one thousand, fifty-five".