54756581 has 4 divisors (see below), whose sum is σ = 59734464. Its totient is φ = 49778700.

The previous prime is 54756563. The next prime is 54756599. The reversal of 54756581 is 18565745.

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 an interprime number because it is at equal distance from previous prime (54756563) and next prime (54756599).

It is a cyclic number.

It is not a de Polignac number, because 54756581 - 2⁶ = 54756517 is a prime.

It is a super-2 number, since 2×54756581² = 5996566325619122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54756181) 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, 2488925 + ... + 2488946.

It is an arithmetic number, because the mean of its divisors is an integer number (14933616).

Almost surely, 2^54756581 is an apocalyptic number.

It is an amenable number.

54756581 is a deficient number, since it is larger than the sum of its proper divisors (4977883).

54756581 is a wasteful number, since it uses less digits than its factorization.

54756581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4977882.

The product of its digits is 168000, while the sum is 41.

The square root of 54756581 is about 7399.7689828805. The cubic root of 54756581 is about 379.7333794560.

The spelling of 54756581 in words is "fifty-four million, seven hundred fifty-six thousand, five hundred eighty-one".