55664467 has 4 divisors (see below), whose sum is σ = 55956096. Its totient is φ = 55372840.

The previous prime is 55664461. The next prime is 55664473. The reversal of 55664467 is 76446655.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76446655 = 5 ⋅15289331.

It is an interprime number because it is at equal distance from previous prime (55664461) and next prime (55664473).

It is a cyclic number.

It is not a de Polignac number, because 55664467 - 2⁷ = 55664339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55664461) 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, 145528 + ... + 145909.

It is an arithmetic number, because the mean of its divisors is an integer number (13989024).

Almost surely, 2^55664467 is an apocalyptic number.

55664467 is a deficient number, since it is larger than the sum of its proper divisors (291629).

55664467 is a wasteful number, since it uses less digits than its factorization.

55664467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291628.

The product of its digits is 604800, while the sum is 43.

The square root of 55664467 is about 7460.8623496215. The cubic root of 55664467 is about 381.8205963858.

The spelling of 55664467 in words is "fifty-five million, six hundred sixty-four thousand, four hundred sixty-seven".