1550135423 has 8 divisors (see below), whose sum is σ = 1588726656. Its totient is φ = 1511659800.

The previous prime is 1550135399. The next prime is 1550135449. The reversal of 1550135423 is 3245310551.

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

It is a cyclic number.

It is not a de Polignac number, because 1550135423 - 2⁶ = 1550135359 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 (1550135023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1433 + ... + 55698.

It is an arithmetic number, because the mean of its divisors is an integer number (198590832).

Almost surely, 2^1550135423 is an apocalyptic number.

1550135423 is a deficient number, since it is larger than the sum of its proper divisors (38591233).

1550135423 is an equidigital number, since it uses as much as digits as its factorization.

1550135423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57805.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1550135423 is about 39371.7592063144. The cubic root of 1550135423 is about 1157.3282304313.

Adding to 1550135423 its reverse (3245310551), we get a palindrome (4795445974).

The spelling of 1550135423 in words is "one billion, five hundred fifty million, one hundred thirty-five thousand, four hundred twenty-three".