5621605429 has 12 divisors (see below), whose sum is σ = 6181605388. Its totient is φ = 5108495040.

The previous prime is 5621605403. The next prime is 5621605499. The reversal of 5621605429 is 9245061265.

It can be written as a sum of positive squares in 2 ways, for example, as 2483028900 + 3138576529 = 49830^2 + 56023^2 .

It is not a de Polignac number, because 5621605429 - 2¹³ = 5621597237 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5621605391 and 5621605400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621605499) 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, 349447 + ... + 365179.

Almost surely, 2^5621605429 is an apocalyptic number.

It is an amenable number.

5621605429 is a deficient number, since it is larger than the sum of its proper divisors (559999959).

5621605429 is a wasteful number, since it uses less digits than its factorization.

5621605429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18708 (or 18697 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 5621605429 is about 74977.3661113806. The cubic root of 5621605429 is about 1778.0888283486.

The spelling of 5621605429 in words is "five billion, six hundred twenty-one million, six hundred five thousand, four hundred twenty-nine".