5521421650 has 24 divisors (see below), whose sum is σ = 10623979620. Its totient is φ = 2132410560.

The previous prime is 5521421623. The next prime is 5521421657. The reversal of 5521421650 is 561241255.

It can be written as a sum of positive squares in 6 ways, for example, as 3203673201 + 2317748449 = 56601^2 + 48143^2 .

It is not an unprimeable number, because it can be changed into a prime (5521421657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1902489 + ... + 1905388.

Almost surely, 2^5521421650 is an apocalyptic number.

5521421650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5521421650 is a deficient number, since it is larger than the sum of its proper divisors (5102557970).

5521421650 is a wasteful number, since it uses less digits than its factorization.

5521421650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3807918 (or 3807913 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 5521421650 is about 74306.2692509858. The cubic root of 5521421650 is about 1767.4628923480.

The spelling of 5521421650 in words is "five billion, five hundred twenty-one million, four hundred twenty-one thousand, six hundred fifty".