1045555401 has 16 divisors (see below), whose sum is σ = 1521805248. Its totient is φ = 633254400.

The previous prime is 1045555393. The next prime is 1045555447.

1045555401 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1045555401 - 2³ = 1045555393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1045559401) 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, 45121 + ... + 64241.

It is an arithmetic number, because the mean of its divisors is an integer number (95112828).

Almost surely, 2^1045555401 is an apocalyptic number.

1045555401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1045555401 is a deficient number, since it is larger than the sum of its proper divisors (476249847).

1045555401 is a wasteful number, since it uses less digits than its factorization.

1045555401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20792.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 1045555401 is about 32335.0491108333. The cubic root of 1045555401 is about 1014.9602097209.

It can be divided in two parts, 10455 and 55401, that added together give a palindrome (65856).

The spelling of 1045555401 in words is "one billion, forty-five million, five hundred fifty-five thousand, four hundred one".