54661659 has 16 divisors (see below), whose sum is σ = 78621984. Its totient is φ = 33580800.

The previous prime is 54661631. The next prime is 54661667. The reversal of 54661659 is 95616645.

It is not a de Polignac number, because 54661659 - 2⁷ = 54661531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54661659.

It is not an unprimeable number, because it can be changed into a prime (54661619) 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, 40719 + ... + 42039.

It is an arithmetic number, because the mean of its divisors is an integer number (4913874).

Almost surely, 2^54661659 is an apocalyptic number.

54661659 is a deficient number, since it is larger than the sum of its proper divisors (23960325).

54661659 is a wasteful number, since it uses less digits than its factorization.

54661659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398.

The product of its digits is 194400, while the sum is 42.

The square root of 54661659 is about 7393.3523519443. The cubic root of 54661659 is about 379.5138265449.

It can be divided in two parts, 5 and 4661659, that added together give a palindrome (4661664).

The spelling of 54661659 in words is "fifty-four million, six hundred sixty-one thousand, six hundred fifty-nine".