2745971550 has 192 divisors, whose sum is σ = 8778723840. Its totient is φ = 618140160.

The previous prime is 2745971533. The next prime is 2745971609. The reversal of 2745971550 is 551795472.

2745971550 is a `hidden beast` number, since 2 + 7 + 4 + 5 + 97 + 1 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 2745971496 and 2745971505.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 630982 + ... + 635318.

It is an arithmetic number, because the mean of its divisors is an integer number (45722520).

Almost surely, 2^2745971550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2745971550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4389361920).

2745971550 is an abundant number, since it is smaller than the sum of its proper divisors (6032752290).

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

2745971550 is a wasteful number, since it uses less digits than its factorization.

2745971550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432 (or 4421 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The square root of 2745971550 is about 52402.0185679903. The cubic root of 2745971550 is about 1400.3352173479.

The spelling of 2745971550 in words is "two billion, seven hundred forty-five million, nine hundred seventy-one thousand, five hundred fifty".