5621201501 has 4 divisors (see below), whose sum is σ = 5621351904. Its totient is φ = 5621051100.

The previous prime is 5621201491. The next prime is 5621201513. The reversal of 5621201501 is 1051021265.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5621201501 - 2¹⁰ = 5621200477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621201581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28856 + ... + 109886.

It is an arithmetic number, because the mean of its divisors is an integer number (1405337976).

Almost surely, 2^5621201501 is an apocalyptic number.

It is an amenable number.

5621201501 is a deficient number, since it is larger than the sum of its proper divisors (150403).

5621201501 is an equidigital number, since it uses as much as digits as its factorization.

5621201501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150402.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 5621201501 is about 74974.6723967501. The cubic root of 5621201501 is about 1778.0462404511.

Adding to 5621201501 its reverse (1051021265), we get a palindrome (6672222766).

The spelling of 5621201501 in words is "five billion, six hundred twenty-one million, two hundred one thousand, five hundred one".