1553750165 has 32 divisors (see below), whose sum is σ = 2143625472. Its totient is φ = 1070080000.

The previous prime is 1553750147. The next prime is 1553750179. The reversal of 1553750165 is 5610573551.

It is not a de Polignac number, because 1553750165 - 2¹⁴ = 1553733781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121685 + ... + 133845.

It is an arithmetic number, because the mean of its divisors is an integer number (66988296).

Almost surely, 2^1553750165 is an apocalyptic number.

It is an amenable number.

1553750165 is a deficient number, since it is larger than the sum of its proper divisors (589875307).

1553750165 is a wasteful number, since it uses less digits than its factorization.

1553750165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12301.

The product of its (nonzero) digits is 78750, while the sum is 38.

The square root of 1553750165 is about 39417.6377399763. The cubic root of 1553750165 is about 1158.2271186473.

The spelling of 1553750165 in words is "one billion, five hundred fifty-three million, seven hundred fifty thousand, one hundred sixty-five".