54639761 has 8 divisors (see below), whose sum is σ = 59857248. Its totient is φ = 49464000.

The previous prime is 54639733. The next prime is 54639769. The reversal of 54639761 is 16793645.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54639761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54639769) 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, 7655 + ... + 12956.

It is an arithmetic number, because the mean of its divisors is an integer number (7482156).

Almost surely, 2^54639761 is an apocalyptic number.

It is an amenable number.

54639761 is a deficient number, since it is larger than the sum of its proper divisors (5217487).

54639761 is a wasteful number, since it uses less digits than its factorization.

54639761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20863.

The product of its digits is 136080, while the sum is 41.

The square root of 54639761 is about 7391.8712786412. The cubic root of 54639761 is about 379.4631407812.

The spelling of 54639761 in words is "fifty-four million, six hundred thirty-nine thousand, seven hundred sixty-one".