55611847 has 2 divisors, whose sum is σ = 55611848. Its totient is φ = 55611846.

The previous prime is 55611839. The next prime is 55611869. The reversal of 55611847 is 74811655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55611847 - 2³ = 55611839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55611827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27805923 + 27805924.

It is an arithmetic number, because the mean of its divisors is an integer number (27805924).

Almost surely, 2^55611847 is an apocalyptic number.

55611847 is a deficient number, since it is larger than the sum of its proper divisors (1).

55611847 is an equidigital number, since it uses as much as digits as its factorization.

55611847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 37.

The square root of 55611847 is about 7457.3351138326. The cubic root of 55611847 is about 381.7002459179.

It can be divided in two parts, 556 and 11847, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 55611847 in words is "fifty-five million, six hundred eleven thousand, eight hundred forty-seven".