55145183 has 2 divisors, whose sum is σ = 55145184. Its totient is φ = 55145182.

The previous prime is 55145137. The next prime is 55145213. The reversal of 55145183 is 38154155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55145183 - 2⁸ = 55144927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55145983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27572591 + 27572592.

It is an arithmetic number, because the mean of its divisors is an integer number (27572592).

Almost surely, 2^55145183 is an apocalyptic number.

55145183 is a deficient number, since it is larger than the sum of its proper divisors (1).

55145183 is an equidigital number, since it uses as much as digits as its factorization.

55145183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 32.

The square root of 55145183 is about 7425.9802719910. The cubic root of 55145183 is about 380.6295727101.

The spelling of 55145183 in words is "fifty-five million, one hundred forty-five thousand, one hundred eighty-three".