55667247 has 4 divisors (see below), whose sum is σ = 74223000. Its totient is φ = 37111496.

The previous prime is 55667243. The next prime is 55667251. The reversal of 55667247 is 74276655.

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

It is an interprime number because it is at equal distance from previous prime (55667243) and next prime (55667251).

It is a cyclic number.

It is not a de Polignac number, because 55667247 - 2² = 55667243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55667199 and 55667208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55667243) 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, 9277872 + ... + 9277877.

It is an arithmetic number, because the mean of its divisors is an integer number (18555750).

Almost surely, 2^55667247 is an apocalyptic number.

55667247 is a deficient number, since it is larger than the sum of its proper divisors (18555753).

55667247 is a wasteful number, since it uses less digits than its factorization.

55667247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18555752.

The product of its digits is 352800, while the sum is 42.

The square root of 55667247 is about 7461.0486528369. The cubic root of 55667247 is about 381.8269525866.

The spelling of 55667247 in words is "fifty-five million, six hundred sixty-seven thousand, two hundred forty-seven".