1550855090 has 32 divisors (see below), whose sum is σ = 2963589120. Its totient is φ = 582302464.

The previous prime is 1550855057. The next prime is 1550855093. The reversal of 1550855090 is 905580551.

It is not an unprimeable number, because it can be changed into a prime (1550855093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53201 + ... + 77019.

It is an arithmetic number, because the mean of its divisors is an integer number (92612160).

Almost surely, 2^1550855090 is an apocalyptic number.

1550855090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1550855090 is a deficient number, since it is larger than the sum of its proper divisors (1412734030).

1550855090 is a wasteful number, since it uses less digits than its factorization.

1550855090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24226.

The product of its (nonzero) digits is 45000, while the sum is 38.

The square root of 1550855090 is about 39380.8975265928. The cubic root of 1550855090 is about 1157.5073034042.

The spelling of 1550855090 in words is "one billion, five hundred fifty million, eight hundred fifty-five thousand, ninety".