54439747 has 4 divisors (see below), whose sum is σ = 55206576. Its totient is φ = 53672920.

The previous prime is 54439741. The next prime is 54439753. The reversal of 54439747 is 74793445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74793445 = 5 ⋅14958689.

It is an interprime number because it is at equal distance from previous prime (54439741) and next prime (54439753).

It is a cyclic number.

It is not a de Polignac number, because 54439747 - 2³ = 54439739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54439741) 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, 383308 + ... + 383449.

It is an arithmetic number, because the mean of its divisors is an integer number (13801644).

Almost surely, 2^54439747 is an apocalyptic number.

54439747 is a deficient number, since it is larger than the sum of its proper divisors (766829).

54439747 is an equidigital number, since it uses as much as digits as its factorization.

54439747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766828.

The product of its digits is 423360, while the sum is 43.

The square root of 54439747 is about 7378.3295534965. The cubic root of 54439747 is about 378.9995544442. Note that the first 3 decimals are identical.

The spelling of 54439747 in words is "fifty-four million, four hundred thirty-nine thousand, seven hundred forty-seven".