54428665 has 16 divisors (see below), whose sum is σ = 67415040. Its totient is φ = 42154560.

The previous prime is 54428663. The next prime is 54428677. The reversal of 54428665 is 56682445.

It is not a de Polignac number, because 54428665 - 2¹ = 54428663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54428663) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43600 + ... + 44830.

It is an arithmetic number, because the mean of its divisors is an integer number (4213440).

Almost surely, 2^54428665 is an apocalyptic number.

It is an amenable number.

54428665 is a deficient number, since it is larger than the sum of its proper divisors (12986375).

54428665 is a wasteful number, since it uses less digits than its factorization.

54428665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512.

The product of its digits is 230400, while the sum is 40.

The square root of 54428665 is about 7377.5785322828. The cubic root of 54428665 is about 378.9738357471.

The spelling of 54428665 in words is "fifty-four million, four hundred twenty-eight thousand, six hundred sixty-five".