1550161101 has 4 divisors (see below), whose sum is σ = 2066881472. Its totient is φ = 1033440732.

The previous prime is 1550161073. The next prime is 1550161117. The reversal of 1550161101 is 1011610551.

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.

It is not a de Polignac number, because 1550161101 - 2¹⁰ = 1550160077 is a prime.

It is a super-3 number, since 3×1550161101³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550161181) 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, 258360181 + ... + 258360186.

It is an arithmetic number, because the mean of its divisors is an integer number (516720368).

Almost surely, 2^1550161101 is an apocalyptic number.

It is an amenable number.

1550161101 is a deficient number, since it is larger than the sum of its proper divisors (516720371).

1550161101 is an equidigital number, since it uses as much as digits as its factorization.

1550161101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516720370.

The product of its (nonzero) digits is 150, while the sum is 21.

The square root of 1550161101 is about 39372.0853016449. The cubic root of 1550161101 is about 1157.3346207784.

Adding to 1550161101 its reverse (1011610551), we get a palindrome (2561771652).

The spelling of 1550161101 in words is "one billion, five hundred fifty million, one hundred sixty-one thousand, one hundred one".