1550053994 has 8 divisors (see below), whose sum is σ = 2328839040. Its totient is φ = 773774316.

The previous prime is 1550053979. The next prime is 1550053997. The reversal of 1550053994 is 4993500551.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1550053997) 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 3 ways as a sum of consecutive naturals, for example, 624794 + ... + 627269.

It is an arithmetic number, because the mean of its divisors is an integer number (291104880).

Almost surely, 2^1550053994 is an apocalyptic number.

1550053994 is a deficient number, since it is larger than the sum of its proper divisors (778785046).

1550053994 is a wasteful number, since it uses less digits than its factorization.

1550053994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252684.

The product of its (nonzero) digits is 121500, while the sum is 41.

The square root of 1550053994 is about 39370.7250885731. The cubic root of 1550053994 is about 1157.3079651630.

The spelling of 1550053994 in words is "one billion, five hundred fifty million, fifty-three thousand, nine hundred ninety-four".