55311547 has 2 divisors, whose sum is σ = 55311548. Its totient is φ = 55311546.

The previous prime is 55311541. The next prime is 55311551. The reversal of 55311547 is 74511355.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55311547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55311541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27655773 + 27655774.

It is an arithmetic number, because the mean of its divisors is an integer number (27655774).

Almost surely, 2^55311547 is an apocalyptic number.

55311547 is a deficient number, since it is larger than the sum of its proper divisors (1).

55311547 is an equidigital number, since it uses as much as digits as its factorization.

55311547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10500, while the sum is 31.

The square root of 55311547 is about 7437.1733205567. The cubic root of 55311547 is about 381.0119541674.

It can be divided in two parts, 553 and 11547, that added together give a square (12100 = 110²).

The spelling of 55311547 in words is "fifty-five million, three hundred eleven thousand, five hundred forty-seven".