2653649550 has 72 divisors (see below), whose sum is σ = 7136891424. Its totient is φ = 706903680.

The previous prime is 2653649533. The next prime is 2653649567. The reversal of 2653649550 is 559463562.

2653649550 is a `hidden beast` number, since 2 + 6 + 53 + 6 + 49 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (2653649533) and next prime (2653649567).

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 = 2653649496 and 2653649505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 534379 + ... + 539321.

It is an arithmetic number, because the mean of its divisors is an integer number (99123492).

Almost surely, 2^2653649550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2653649550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3568445712).

2653649550 is an abundant number, since it is smaller than the sum of its proper divisors (4483241874).

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

2653649550 is a wasteful number, since it uses less digits than its factorization.

2653649550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154 (or 6146 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The square root of 2653649550 is about 51513.5860720257. The cubic root of 2653649550 is about 1384.4624760987.

The spelling of 2653649550 in words is "two billion, six hundred fifty-three million, six hundred forty-nine thousand, five hundred fifty".