54778146 has 16 divisors (see below), whose sum is σ = 109634304. Its totient is φ = 18246384.

The previous prime is 54778127. The next prime is 54778151. The reversal of 54778146 is 64187745.

It is a junction number, because it is equal to n+sod(n) for n = 54778098 and 54778107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10095 + ... + 14541.

It is an arithmetic number, because the mean of its divisors is an integer number (6852144).

Almost surely, 2^54778146 is an apocalyptic number.

54778146 is an abundant number, since it is smaller than the sum of its proper divisors (54856158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54778146 is a wasteful number, since it uses less digits than its factorization.

54778146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6505.

The product of its digits is 188160, while the sum is 42.

The square root of 54778146 is about 7401.2259795253. The cubic root of 54778146 is about 379.7832235440.

The spelling of 54778146 in words is "fifty-four million, seven hundred seventy-eight thousand, one hundred forty-six".