55487347 has 2 divisors, whose sum is σ = 55487348. Its totient is φ = 55487346.

The previous prime is 55487297. The next prime is 55487359. The reversal of 55487347 is 74378455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55487347 - 2¹⁵ = 55454579 is a prime.

It is a super-3 number, since 3×55487347³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (55487147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27743673 + 27743674.

It is an arithmetic number, because the mean of its divisors is an integer number (27743674).

Almost surely, 2^55487347 is an apocalyptic number.

55487347 is a deficient number, since it is larger than the sum of its proper divisors (1).

55487347 is an equidigital number, since it uses as much as digits as its factorization.

55487347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 43.

The square root of 55487347 is about 7448.9829507121. The cubic root of 55487347 is about 381.4151916227.

The spelling of 55487347 in words is "fifty-five million, four hundred eighty-seven thousand, three hundred forty-seven".