5621137601 has 12 divisors (see below), whose sum is σ = 6221827332. Its totient is φ = 5060453376.

The previous prime is 5621137531. The next prime is 5621137619. The reversal of 5621137601 is 1067311265.

It can be written as a sum of positive squares in 2 ways, for example, as 1869697600 + 3751440001 = 43240^2 + 61249^2 .

It is a de Polignac number, because none of the positive numbers 2^k-5621137601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5621137801) 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, 303536 + ... + 321521.

It is an arithmetic number, because the mean of its divisors is an integer number (518485611).

Almost surely, 2^5621137601 is an apocalyptic number.

It is an amenable number.

5621137601 is a deficient number, since it is larger than the sum of its proper divisors (600689731).

5621137601 is a wasteful number, since it uses less digits than its factorization.

5621137601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625120 (or 625097 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 5621137601 is about 74974.2462516296. The cubic root of 5621137601 is about 1778.0395030075.

Adding to 5621137601 its reverse (1067311265), we get a palindrome (6688448866).

The spelling of 5621137601 in words is "five billion, six hundred twenty-one million, one hundred thirty-seven thousand, six hundred one".