1550122001 has 8 divisors (see below), whose sum is σ = 1555317504. Its totient is φ = 1544936400.

The previous prime is 1550121997. The next prime is 1550122003. The reversal of 1550122001 is 1002210551.

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

It is not a de Polignac number, because 1550122001 - 2² = 1550121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1550122003) 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, 423686 + ... + 427328.

It is an arithmetic number, because the mean of its divisors is an integer number (194414688).

Almost surely, 2^1550122001 is an apocalyptic number.

It is an amenable number.

1550122001 is a deficient number, since it is larger than the sum of its proper divisors (5195503).

1550122001 is an equidigital number, since it uses as much as digits as its factorization.

1550122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 1550122001 is about 39371.5887538209. The cubic root of 1550122001 is about 1157.3248901415.

Adding to 1550122001 its reverse (1002210551), we get a palindrome (2552332552).

The spelling of 1550122001 in words is "one billion, five hundred fifty million, one hundred twenty-two thousand, one".