1550012201 has 4 divisors (see below), whose sum is σ = 1582991232. Its totient is φ = 1517033172.

The previous prime is 1550012171. The next prime is 1550012221. The reversal of 1550012201 is 1022100551.

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.

It is a cyclic number.

It is not a de Polignac number, because 1550012201 - 2²⁶ = 1482903337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1550012201.

It is not an unprimeable number, because it can be changed into a prime (1550012221) 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, 16489445 + ... + 16489538.

It is an arithmetic number, because the mean of its divisors is an integer number (395747808).

Almost surely, 2^1550012201 is an apocalyptic number.

It is an amenable number.

1550012201 is a deficient number, since it is larger than the sum of its proper divisors (32979031).

1550012201 is an equidigital number, since it uses as much as digits as its factorization.

1550012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32979030.

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

The square root of 1550012201 is about 39370.1943226091. The cubic root of 1550012201 is about 1157.2975638465.

Adding to 1550012201 its reverse (1022100551), we get a palindrome (2572112752).

The spelling of 1550012201 in words is "one billion, five hundred fifty million, twelve thousand, two hundred one".