54378455 has 4 divisors (see below), whose sum is σ = 65254152. Its totient is φ = 43502760.

The previous prime is 54378449. The next prime is 54378469. The reversal of 54378455 is 55487345.

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

It is not a de Polignac number, because 54378455 - 2⁴ = 54378439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5437841 + ... + 5437850.

It is an arithmetic number, because the mean of its divisors is an integer number (16313538).

Almost surely, 2^54378455 is an apocalyptic number.

54378455 is a deficient number, since it is larger than the sum of its proper divisors (10875697).

54378455 is a wasteful number, since it uses less digits than its factorization.

54378455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10875696.

The product of its digits is 336000, while the sum is 41.

The square root of 54378455 is about 7374.1748690955. The cubic root of 54378455 is about 378.8572664698.

It can be divided in two parts, 543 and 78455, that multiplied together give a triangular number (42601065 = T₉₂₃₀).

The spelling of 54378455 in words is "fifty-four million, three hundred seventy-eight thousand, four hundred fifty-five".