507778245 has 72 divisors (see below), whose sum is σ = 994840704. Its totient is φ = 239031936.

The previous prime is 507778231. The next prime is 507778247. The reversal of 507778245 is 542877705.

It is not a de Polignac number, because 507778245 - 2⁶ = 507778181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 507778245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507778247) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 173464 + ... + 176366.

It is an arithmetic number, because the mean of its divisors is an integer number (13817232).

Almost surely, 2^507778245 is an apocalyptic number.

It is an amenable number.

507778245 is a deficient number, since it is larger than the sum of its proper divisors (487062459).

507778245 is a wasteful number, since it uses less digits than its factorization.

507778245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963 (or 2947 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 45.

The square root of 507778245 is about 22533.9354086231. The cubic root of 507778245 is about 797.7950978620.

The spelling of 507778245 in words is "five hundred seven million, seven hundred seventy-eight thousand, two hundred forty-five".