54003581 has 4 divisors (see below), whose sum is σ = 55745664. Its totient is φ = 52261500.

The previous prime is 54003559. The next prime is 54003629. The reversal of 54003581 is 18530045.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18530045 = 5 ⋅3706009.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54003581 is a prime.

It is a super-2 number, since 2×54003581² = 5832773521647122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54003581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54003281) 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, 870995 + ... + 871056.

It is an arithmetic number, because the mean of its divisors is an integer number (13936416).

Almost surely, 2^54003581 is an apocalyptic number.

It is an amenable number.

54003581 is a deficient number, since it is larger than the sum of its proper divisors (1742083).

54003581 is a wasteful number, since it uses less digits than its factorization.

54003581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742082.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 54003581 is about 7348.7128804982. The cubic root of 54003581 is about 377.9846699269.

The spelling of 54003581 in words is "fifty-four million, three thousand, five hundred eighty-one".