54998581 has 4 divisors (see below), whose sum is σ = 59998464. Its totient is φ = 49998700.

The previous prime is 54998551. The next prime is 54998599. The reversal of 54998581 is 18589945.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54998581 - 2⁷ = 54998453 is a prime.

It is a super-2 number, since 2×54998581² = 6049687824027122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54998501) 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, 2499925 + ... + 2499946.

It is an arithmetic number, because the mean of its divisors is an integer number (14999616).

Almost surely, 2^54998581 is an apocalyptic number.

It is an amenable number.

54998581 is a deficient number, since it is larger than the sum of its proper divisors (4999883).

54998581 is a wasteful number, since it uses less digits than its factorization.

54998581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999882.

The product of its digits is 518400, while the sum is 49.

The square root of 54998581 is about 7416.1028175181. The cubic root of 54998581 is about 380.2919755089.

The spelling of 54998581 in words is "fifty-four million, nine hundred ninety-eight thousand, five hundred eighty-one".