1611053550 has 120 divisors (see below), whose sum is σ = 4497509016. Its totient is φ = 429351840.

The previous prime is 1611053531. The next prime is 1611053573. The reversal of 1611053550 is 553501161.

1611053550 is a `hidden beast` number, since 1 + 6 + 1 + 105 + 3 + 550 = 666.

1611053550 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 983332 + ... + 984968.

Almost surely, 2^1611053550 is an apocalyptic number.

1611053550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1611053550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2248754508).

1611053550 is an abundant number, since it is smaller than the sum of its proper divisors (2886455466).

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

1611053550 is an frugal number, since it uses more digits than its factorization.

1611053550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 1611053550 is about 40137.9315610558. The cubic root of 1611053550 is about 1172.2943145850.

The spelling of 1611053550 in words is "one billion, six hundred eleven million, fifty-three thousand, five hundred fifty".