54778635 has 12 divisors (see below), whose sum is σ = 94949712. Its totient is φ = 29215248.

The previous prime is 54778621. The next prime is 54778639. The reversal of 54778635 is 53687745.

54778635 is a `hidden beast` number, since 5 + 4 + 7 + 7 + 8 + 635 = 666.

It is not a de Polignac number, because 54778635 - 2⁸ = 54778379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1217303 = 54778635 / (5 + 4 + 7 + 7 + 8 + 6 + 3 + 5).

It is not an unprimeable number, because it can be changed into a prime (54778639) 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, 608607 + ... + 608696.

It is an arithmetic number, because the mean of its divisors is an integer number (7912476).

Almost surely, 2^54778635 is an apocalyptic number.

54778635 is a deficient number, since it is larger than the sum of its proper divisors (40171077).

54778635 is a wasteful number, since it uses less digits than its factorization.

54778635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217314 (or 1217311 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 54778635 is about 7401.2590145191. The cubic root of 54778635 is about 379.7843536385.

The spelling of 54778635 in words is "fifty-four million, seven hundred seventy-eight thousand, six hundred thirty-five".