1550155040 has 48 divisors (see below), whose sum is σ = 4185421632. Its totient is φ = 531481344.

The previous prime is 1550155037. The next prime is 1550155049. The reversal of 1550155040 is 405510551.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (1550155049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690914 + ... + 693153.

It is an arithmetic number, because the mean of its divisors is an integer number (87196284).

Almost surely, 2^1550155040 is an apocalyptic number.

1550155040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1550155040 is an abundant number, since it is smaller than the sum of its proper divisors (2635266592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1550155040 is a wasteful number, since it uses less digits than its factorization.

1550155040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384089 (or 1384081 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 1550155040 is about 39372.0083307926. The cubic root of 1550155040 is about 1157.3331124159. Note that the first 3 decimals are identical.

Adding to 1550155040 its reverse (405510551), we get a palindrome (1955665591).

The spelling of 1550155040 in words is "one billion, five hundred fifty million, one hundred fifty-five thousand, forty".