545444130 has 128 divisors (see below), whose sum is σ = 1638973440. Its totient is φ = 112861440.

The previous prime is 545444117. The next prime is 545444143. The reversal of 545444130 is 31444545.

It is an interprime number because it is at equal distance from previous prime (545444117) and next prime (545444143).

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 898287 + ... + 898893.

It is an arithmetic number, because the mean of its divisors is an integer number (12804480).

Almost surely, 2^545444130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545444130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819486720).

545444130 is an abundant number, since it is smaller than the sum of its proper divisors (1093529310).

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

545444130 is a wasteful number, since it uses less digits than its factorization.

545444130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 545444130 is about 23354.7453422211. The cubic root of 545444130 is about 817.0527400363.

Adding to 545444130 its reverse (31444545), we get a palindrome (576888675).

The spelling of 545444130 in words is "five hundred forty-five million, four hundred forty-four thousand, one hundred thirty".