54819890 has 8 divisors (see below), whose sum is σ = 98675820. Its totient is φ = 21927952.

The previous prime is 54819857. The next prime is 54819893. The reversal of 54819890 is 9891845.

It can be written as a sum of positive squares in 2 ways, for example, as 51423241 + 3396649 = 7171^2 + 1843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×54819890² = 6010440679224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54819893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2740985 + ... + 2741004.

Almost surely, 2^54819890 is an apocalyptic number.

54819890 is a deficient number, since it is larger than the sum of its proper divisors (43855930).

54819890 is a wasteful number, since it uses less digits than its factorization.

54819890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481996.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 54819890 is about 7404.0455157974. The cubic root of 54819890 is about 379.8796710425.

The spelling of 54819890 in words is "fifty-four million, eight hundred nineteen thousand, eight hundred ninety".