54788407 has 4 divisors (see below), whose sum is σ = 56062600. Its totient is φ = 53514216.

The previous prime is 54788401. The next prime is 54788429. The reversal of 54788407 is 70488745.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54788407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 1274149 = 54788407 / (5 + 4 + 7 + 8 + 8 + 4 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54788401) 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, 637032 + ... + 637117.

It is an arithmetic number, because the mean of its divisors is an integer number (14015650).

Almost surely, 2^54788407 is an apocalyptic number.

54788407 is the 4274-th hex number.

54788407 is a deficient number, since it is larger than the sum of its proper divisors (1274193).

54788407 is a wasteful number, since it uses less digits than its factorization.

54788407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274192.

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 54788407 is about 7401.9191430331. The cubic root of 54788407 is about 379.8069356302.

The spelling of 54788407 in words is "fifty-four million, seven hundred eighty-eight thousand, four hundred seven".