55616247 has 8 divisors (see below), whose sum is σ = 82394480. Its totient is φ = 37077480.

The previous prime is 55616233. The next prime is 55616251. The reversal of 55616247 is 74261655.

It is a happy number.

55616247 is a `hidden beast` number, since 556 + 1 + 62 + 47 = 666.

It is not a de Polignac number, because 55616247 - 2⁸ = 55615991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55616147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029904 + ... + 1029957.

It is an arithmetic number, because the mean of its divisors is an integer number (10299310).

Almost surely, 2^55616247 is an apocalyptic number.

55616247 is a deficient number, since it is larger than the sum of its proper divisors (26778233).

55616247 is a wasteful number, since it uses less digits than its factorization.

55616247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059870 (or 2059864 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 55616247 is about 7457.6301195487. The cubic root of 55616247 is about 381.7103123389.

The spelling of 55616247 in words is "fifty-five million, six hundred sixteen thousand, two hundred forty-seven".