1550150551 has 4 divisors (see below), whose sum is σ = 1550238912. Its totient is φ = 1550062192.

The previous prime is 1550150513. The next prime is 1550150621. The reversal of 1550150551 is 1550510551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1550510551 = 17 ⋅91206503.

It is a cyclic number.

It is not a de Polignac number, because 1550150551 - 2¹⁷ = 1550019479 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 (1550150051) 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, 7975 + ... + 56248.

It is an arithmetic number, because the mean of its divisors is an integer number (387559728).

Almost surely, 2^1550150551 is an apocalyptic number.

1550150551 is a deficient number, since it is larger than the sum of its proper divisors (88361).

1550150551 is an equidigital number, since it uses as much as digits as its factorization.

1550150551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88360.

The product of its (nonzero) digits is 3125, while the sum is 28.

The square root of 1550150551 is about 39371.9513232453. The cubic root of 1550150551 is about 1157.3319952646.

Subtracting 1550150551 from its reverse (1550510551), we obtain a square (360000 = 600²).

The spelling of 1550150551 in words is "one billion, five hundred fifty million, one hundred fifty thousand, five hundred fifty-one".