54640427 has 4 divisors (see below), whose sum is σ = 55389000. Its totient is φ = 53891856.

The previous prime is 54640381. The next prime is 54640451. The reversal of 54640427 is 72404645.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72404645 = 5 ⋅14480929.

It is a cyclic number.

It is not a de Polignac number, because 54640427 - 2⁸ = 54640171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54640393 and 54640402.

It is not an unprimeable number, because it can be changed into a prime (54640457) 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, 374177 + ... + 374322.

It is an arithmetic number, because the mean of its divisors is an integer number (13847250).

Almost surely, 2^54640427 is an apocalyptic number.

54640427 is a deficient number, since it is larger than the sum of its proper divisors (748573).

54640427 is an equidigital number, since it uses as much as digits as its factorization.

54640427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748572.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 54640427 is about 7391.9163279897. The cubic root of 54640427 is about 379.4646825243.

The spelling of 54640427 in words is "fifty-four million, six hundred forty thousand, four hundred twenty-seven".