54240561 has 12 divisors (see below), whose sum is σ = 78488592. Its totient is φ = 36095256.

The previous prime is 54240551. The next prime is 54240623. The reversal of 54240561 is 16504245.

It is not a de Polignac number, because 54240561 - 2¹³ = 54232369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54240551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150 + ... + 10416.

It is an arithmetic number, because the mean of its divisors is an integer number (6540716).

Almost surely, 2^54240561 is an apocalyptic number.

It is an amenable number.

54240561 is a deficient number, since it is larger than the sum of its proper divisors (24248031).

54240561 is a wasteful number, since it uses less digits than its factorization.

54240561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10860 (or 10857 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 54240561 is about 7364.8191423822. The cubic root of 54240561 is about 378.5367573937.

The spelling of 54240561 in words is "fifty-four million, two hundred forty thousand, five hundred sixty-one".