505978053 has 16 divisors (see below), whose sum is σ = 772816896. Its totient is φ = 288454320.

The previous prime is 505978049. The next prime is 505978091. The reversal of 505978053 is 350879505.

It is not a de Polignac number, because 505978053 - 2² = 505978049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505977996 and 505978014.

It is a congruent number.

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, 18901 + ... + 37002.

It is an arithmetic number, because the mean of its divisors is an integer number (48301056).

Almost surely, 2^505978053 is an apocalyptic number.

It is an amenable number.

505978053 is a deficient number, since it is larger than the sum of its proper divisors (266838843).

505978053 is a wasteful number, since it uses less digits than its factorization.

505978053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56344.

The product of its (nonzero) digits is 189000, while the sum is 42.

The square root of 505978053 is about 22493.9559215359. The cubic root of 505978053 is about 796.8511917900.

The spelling of 505978053 in words is "five hundred five million, nine hundred seventy-eight thousand, fifty-three".