54478690 has 40 divisors (see below), whose sum is σ = 114448860. Its totient is φ = 18670176.

The previous prime is 54478679. The next prime is 54478691. The reversal of 54478690 is 9687445.

It can be written as a sum of positive squares in 2 ways, for example, as 47734281 + 6744409 = 6909^2 + 2597^2 .

It is a super-2 number, since 2×54478690² = 5935855328232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54478691) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22876 + ... + 25144.

Almost surely, 2^54478690 is an apocalyptic number.

54478690 is an abundant number, since it is smaller than the sum of its proper divisors (59970170).

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

54478690 is an equidigital number, since it uses as much as digits as its factorization.

54478690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304 (or 2283 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 54478690 is about 7380.9680936853. The cubic root of 54478690 is about 379.0899042501.

The spelling of 54478690 in words is "fifty-four million, four hundred seventy-eight thousand, six hundred ninety".