1647375053 has 4 divisors (see below), whose sum is σ = 1647511548. Its totient is φ = 1647238560.

The previous prime is 1647375043. The next prime is 1647375077. The reversal of 1647375053 is 3505737461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 872198089 + 775176964 = 29533^2 + 27842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1647375053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1647375053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1647375043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48176 + ... + 74937.

It is an arithmetic number, because the mean of its divisors is an integer number (411877887).

Almost surely, 2^1647375053 is an apocalyptic number.

It is an amenable number.

1647375053 is a deficient number, since it is larger than the sum of its proper divisors (136495).

1647375053 is a wasteful number, since it uses less digits than its factorization.

1647375053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136494.

The product of its (nonzero) digits is 264600, while the sum is 41.

The square root of 1647375053 is about 40587.8682982982. The cubic root of 1647375053 is about 1181.0387896012.

The spelling of 1647375053 in words is "one billion, six hundred forty-seven million, three hundred seventy-five thousand, fifty-three".