3550905540 has 864 divisors, whose sum is σ = 14834985984. Its totient is φ = 705438720.

The previous prime is 3550905529. The next prime is 3550905541. The reversal of 3550905540 is 455090553.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3550905495 and 3550905504.

It is not an unprimeable number, because it can be changed into a prime (3550905541) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 95970402 + ... + 95970438.

Almost surely, 2^3550905540 is an apocalyptic number.

3550905540 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 3550905540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7417492992).

3550905540 is an abundant number, since it is smaller than the sum of its proper divisors (11284080444).

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

3550905540 is a wasteful number, since it uses less digits than its factorization.

3550905540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 3550905540 is about 59589.4750773994. The cubic root of 3550905540 is about 1525.6199990880.

The spelling of 3550905540 in words is "three billion, five hundred fifty million, nine hundred five thousand, five hundred forty".