1011550090 has 8 divisors (see below), whose sum is σ = 1820790180. Its totient is φ = 404620032.

The previous prime is 1011550081. The next prime is 1011550147. The reversal of 1011550090 is 900551101.

It can be written as a sum of positive squares in 2 ways, for example, as 923734449 + 87815641 = 30393^2 + 9371^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50577495 + ... + 50577514.

Almost surely, 2^1011550090 is an apocalyptic number.

1011550090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011550090 is a deficient number, since it is larger than the sum of its proper divisors (809240090).

1011550090 is a wasteful number, since it uses less digits than its factorization.

1011550090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101155016.

The product of its (nonzero) digits is 225, while the sum is 22.

The square root of 1011550090 is about 31804.8752552183. The cubic root of 1011550090 is about 1003.8353016560.

The spelling of 1011550090 in words is "one billion, eleven million, five hundred fifty thousand, ninety".