53778807 has 12 divisors (see below), whose sum is σ = 81058224. Its totient is φ = 34293600.

The previous prime is 53778799. The next prime is 53778821. The reversal of 53778807 is 70887735.

It is not a de Polignac number, because 53778807 - 2³ = 53778799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53778007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129694 + ... + 130107.

It is an arithmetic number, because the mean of its divisors is an integer number (6754852).

Almost surely, 2^53778807 is an apocalyptic number.

53778807 is a deficient number, since it is larger than the sum of its proper divisors (27279417).

53778807 is a wasteful number, since it uses less digits than its factorization.

53778807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259830 (or 259827 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 53778807 is about 7333.4035072400. The cubic root of 53778807 is about 377.4595240435.

The spelling of 53778807 in words is "fifty-three million, seven hundred seventy-eight thousand, eight hundred seven".