1001045545 has 32 divisors (see below), whose sum is σ = 1271079936. Its totient is φ = 755827200.

The previous prime is 1001045531. The next prime is 1001045557. The reversal of 1001045545 is 5455401001.

It is a happy number.

It is not a de Polignac number, because 1001045545 - 2¹¹ = 1001043497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2055292 + ... + 2055778.

It is an arithmetic number, because the mean of its divisors is an integer number (39721248).

Almost surely, 2^1001045545 is an apocalyptic number.

It is an amenable number.

1001045545 is a deficient number, since it is larger than the sum of its proper divisors (270034391).

1001045545 is a wasteful number, since it uses less digits than its factorization.

1001045545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841.

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

The square root of 1001045545 is about 31639.3038008108. The cubic root of 1001045545 is about 1000.3483936078.

Adding to 1001045545 its reverse (5455401001), we get a palindrome (6456446546).

It can be divided in two parts, 10010 and 45545, that added together give a palindrome (55555).

The spelling of 1001045545 in words is "one billion, one million, forty-five thousand, five hundred forty-five".