54920581 has 4 divisors (see below), whose sum is σ = 56089152. Its totient is φ = 53752012.

The previous prime is 54920539. The next prime is 54920603. The reversal of 54920581 is 18502945.

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 a de Polignac number, because none of the positive numbers 2^k-54920581 is a prime.

It is a super-2 number, since 2×54920581² = 6032540434755122, 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 (54920521) 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, 584215 + ... + 584308.

It is an arithmetic number, because the mean of its divisors is an integer number (14022288).

Almost surely, 2^54920581 is an apocalyptic number.

It is an amenable number.

54920581 is a deficient number, since it is larger than the sum of its proper divisors (1168571).

54920581 is a wasteful number, since it uses less digits than its factorization.

54920581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168570.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 54920581 is about 7410.8421248870. The cubic root of 54920581 is about 380.1121114265.

The spelling of 54920581 in words is "fifty-four million, nine hundred twenty thousand, five hundred eighty-one".