54405649 has 8 divisors (see below), whose sum is σ = 57980160. Its totient is φ = 50931936.

The previous prime is 54405629. The next prime is 54405677. The reversal of 54405649 is 94650445.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54405649 - 2⁷ = 54405521 is a prime.

It is a super-2 number, since 2×54405649² = 5919949286222402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54405629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24084 + ... + 26245.

It is an arithmetic number, because the mean of its divisors is an integer number (7247520).

Almost surely, 2^54405649 is an apocalyptic number.

It is an amenable number.

54405649 is a deficient number, since it is larger than the sum of its proper divisors (3574511).

54405649 is a wasteful number, since it uses less digits than its factorization.

54405649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50399.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 54405649 is about 7376.0185059421. The cubic root of 54405649 is about 378.9204099064.

The spelling of 54405649 in words is "fifty-four million, four hundred five thousand, six hundred forty-nine".