545512440 has 64 divisors (see below), whose sum is σ = 1785317760. Its totient is φ = 132245120.

The previous prime is 545512403. The next prime is 545512483. The reversal of 545512440 is 44215545.

545512440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 545512398 and 545512407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205314 + ... + 207953.

It is an arithmetic number, because the mean of its divisors is an integer number (27895590).

Almost surely, 2^545512440 is an apocalyptic number.

It is an amenable number.

545512440 is an abundant number, since it is smaller than the sum of its proper divisors (1239805320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545512440 is a wasteful number, since it uses less digits than its factorization.

545512440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413292 (or 413288 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 545512440 is about 23356.2077401277. The cubic root of 545512440 is about 817.0868471305.

Adding to 545512440 its reverse (44215545), we get a palindrome (589727985).

The spelling of 545512440 in words is "five hundred forty-five million, five hundred twelve thousand, four hundred forty".