54640465 has 16 divisors (see below), whose sum is σ = 75738240. Its totient is φ = 37400320.

The previous prime is 54640463. The next prime is 54640471. The reversal of 54640465 is 56404645.

It is not a de Polignac number, because 54640465 - 2¹ = 54640463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54640465.

It is not an unprimeable number, because it can be changed into a prime (54640463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28285 + ... + 30154.

It is an arithmetic number, because the mean of its divisors is an integer number (4733640).

Almost surely, 2^54640465 is an apocalyptic number.

54640465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54640465 is a deficient number, since it is larger than the sum of its proper divisors (21097775).

54640465 is a wasteful number, since it uses less digits than its factorization.

54640465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58472.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 54640465 is about 7391.9188983646. The cubic root of 54640465 is about 379.4647704913.

The spelling of 54640465 in words is "fifty-four million, six hundred forty thousand, four hundred sixty-five".