5621250121 has 8 divisors (see below), whose sum is σ = 5776673760. Its totient is φ = 5466949152.

The previous prime is 5621250113. The next prime is 5621250133. The reversal of 5621250121 is 1210521265.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5621250121 - 2³ = 5621250113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5621200121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270511 + ... + 290548.

It is an arithmetic number, because the mean of its divisors is an integer number (722084220).

Almost surely, 2^5621250121 is an apocalyptic number.

It is an amenable number.

5621250121 is a deficient number, since it is larger than the sum of its proper divisors (155423639).

5621250121 is a wasteful number, since it uses less digits than its factorization.

5621250121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561335.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 5621250121 is about 74974.9966388796. The cubic root of 5621250121 is about 1778.0513667786.

Adding to 5621250121 its reverse (1210521265), we get a palindrome (6831771386).

The spelling of 5621250121 in words is "five billion, six hundred twenty-one million, two hundred fifty thousand, one hundred twenty-one".