1021435545 has 64 divisors (see below), whose sum is σ = 1831382784. Its totient is φ = 482872320.

The previous prime is 1021435507. The next prime is 1021435549. The reversal of 1021435545 is 5455341201.

It is not a de Polignac number, because 1021435545 - 2⁷ = 1021435417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021435549) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 510487 + ... + 512483.

It is an arithmetic number, because the mean of its divisors is an integer number (28615356).

Almost surely, 2^1021435545 is an apocalyptic number.

1021435545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1021435545 is a deficient number, since it is larger than the sum of its proper divisors (809947239).

1021435545 is a wasteful number, since it uses less digits than its factorization.

1021435545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1021435545 is about 31959.9052720749. The cubic root of 1021435545 is about 1007.0947274707.

Adding to 1021435545 its reverse (5455341201), we get a palindrome (6476776746).

The spelling of 1021435545 in words is "one billion, twenty-one million, four hundred thirty-five thousand, five hundred forty-five".