1655230553 has 4 divisors (see below), whose sum is σ = 1657406388. Its totient is φ = 1653054720.

The previous prime is 1655230541. The next prime is 1655230559. The reversal of 1655230553 is 3550325561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3550325561 = 31 ⋅114526631.

It can be written as a sum of positive squares in 2 ways, for example, as 26543104 + 1628687449 = 5152^2 + 40357^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655230553 - 2¹⁰ = 1655229529 is a prime.

It is a super-3 number, since 3×1655230553³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655230559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086776 + ... + 1088297.

It is an arithmetic number, because the mean of its divisors is an integer number (414351597).

Almost surely, 2^1655230553 is an apocalyptic number.

It is an amenable number.

1655230553 is a deficient number, since it is larger than the sum of its proper divisors (2175835).

1655230553 is an equidigital number, since it uses as much as digits as its factorization.

1655230553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175834.

The product of its (nonzero) digits is 67500, while the sum is 35.

The square root of 1655230553 is about 40684.5247360713. The cubic root of 1655230553 is about 1182.9130728390.

The spelling of 1655230553 in words is "one billion, six hundred fifty-five million, two hundred thirty thousand, five hundred fifty-three".