3551023140 has 144 divisors (see below), whose sum is σ = 11713363200. Its totient is φ = 801335808.

The previous prime is 3551023129. The next prime is 3551023171. The reversal of 3551023140 is 413201553.

It is a self number, because there is not a number n which added to its sum of digits gives 3551023140.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224616 + ... + 239904.

It is an arithmetic number, because the mean of its divisors is an integer number (81342800).

Almost surely, 2^3551023140 is an apocalyptic number.

3551023140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3551023140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5856681600).

3551023140 is an abundant number, since it is smaller than the sum of its proper divisors (8162340060).

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

3551023140 is a wasteful number, since it uses less digits than its factorization.

3551023140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15394 (or 15385 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 3551023140 is about 59590.4618206639. The cubic root of 3551023140 is about 1525.6368408888.

Adding to 3551023140 its reverse (413201553), we get a palindrome (3964224693).

The spelling of 3551023140 in words is "three billion, five hundred fifty-one million, twenty-three thousand, one hundred forty".