1655045033 has 4 divisors (see below), whose sum is σ = 1656318468. Its totient is φ = 1653771600.

The previous prime is 1655045011. The next prime is 1655045083. The reversal of 1655045033 is 3305405561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3305405561 = 37561 ⋅88001.

It can be written as a sum of positive squares in 2 ways, for example, as 28697449 + 1626347584 = 5357^2 + 40328^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655045033 - 2¹⁶ = 1654979497 is a prime.

It is a super-2 number, since 2×1655045033² = 5478348122515942178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1655045083) 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, 634766 + ... + 637367.

It is an arithmetic number, because the mean of its divisors is an integer number (414079617).

Almost surely, 2^1655045033 is an apocalyptic number.

It is an amenable number.

1655045033 is a deficient number, since it is larger than the sum of its proper divisors (1273435).

1655045033 is a wasteful number, since it uses less digits than its factorization.

1655045033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273434.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 1655045033 is about 40682.2446897907. The cubic root of 1655045033 is about 1182.8688771362.

The spelling of 1655045033 in words is "one billion, six hundred fifty-five million, forty-five thousand, thirty-three".