505278374 has 4 divisors (see below), whose sum is σ = 757917564. Its totient is φ = 252639186.

The previous prime is 505278317. The next prime is 505278377. The reversal of 505278374 is 473872505.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505278377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126319592 + ... + 126319595.

It is an arithmetic number, because the mean of its divisors is an integer number (189479391).

Almost surely, 2^505278374 is an apocalyptic number.

505278374 is a deficient number, since it is larger than the sum of its proper divisors (252639190).

505278374 is a wasteful number, since it uses less digits than its factorization.

505278374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252639189.

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 505278374 is about 22478.3979411345. The cubic root of 505278374 is about 796.4837204918.

The spelling of 505278374 in words is "five hundred five million, two hundred seventy-eight thousand, three hundred seventy-four".