505978033 has 16 divisors (see below), whose sum is σ = 569327616. Its totient is φ = 445692240.

The previous prime is 505978013. The next prime is 505978049. The reversal of 505978033 is 330879505.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505978033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505978003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55860 + ... + 64282.

It is an arithmetic number, because the mean of its divisors is an integer number (35582976).

Almost surely, 2^505978033 is an apocalyptic number.

It is an amenable number.

505978033 is a deficient number, since it is larger than the sum of its proper divisors (63349583).

505978033 is a wasteful number, since it uses less digits than its factorization.

505978033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8604.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 505978033 is about 22493.9554769720. The cubic root of 505978033 is about 796.8511812909.

The spelling of 505978033 in words is "five hundred five million, nine hundred seventy-eight thousand, thirty-three".